diff --git a/internal/gui/assets/app.js b/internal/gui/assets/app.js
index 6eb605e5..ca5ff91d 100644
--- a/internal/gui/assets/app.js
+++ b/internal/gui/assets/app.js
@@ -3436,6 +3436,9 @@ function openModal(content) {
   const m = $("#modal"), d = m.firstElementChild;
   const fresh = m.hidden || m.classList.contains("out");
   const top = m.hidden ? 0 : d.querySelector(".ebody")?.scrollTop || 0;
+  // Names & levels scrolls inside the editor body, so keep its own position.
+  const names = !fresh && d.querySelector(".mnames:not([hidden])");
+  const namesAt = names && { provider: names.dataset.provider, top: names.scrollTop };
   m.classList.remove("out");
   d.classList.remove("swap");
   if (!fresh) { void d.offsetWidth; d.classList.add("swap"); } // content changed: a soft refresh, not a re-entrance
@@ -3444,6 +3447,8 @@ function openModal(content) {
   m.hidden = false;
   const body = content.querySelector(":scope > .ebody");
   if (body) body.scrollTop = top; // a re-render keeps the place
+  const nextNames = content.querySelector(".mnames:not([hidden])");
+  if (namesAt && nextNames?.dataset.provider === namesAt.provider) nextNames.scrollTop = namesAt.top;
   if (!fresh) return;
   for (const a of [...m.getAnimations(), ...d.getAnimations()]) a.cancel();
   d.style.opacity = d.style.transform = m.style.opacity = "";
@@ -4478,6 +4483,7 @@ function renderModels(p) {
   const box = el("div", "models");
   const chips = el("div", "mchips");
   const names = el("div", "mnames");
+  names.dataset.provider = p.id;
   const q = p.models.length > 24 ? input("", t("filter {n} models…", { n: p.models.length })) : null;
   const draw = () => {
     if (agentMenu && chips.contains(agentMenu.anchor)) closeAgentMenu();
diff --git a/internal/gui/tests/README.md b/internal/gui/tests/README.md
index 71afa655..59a3832d 100644
--- a/internal/gui/tests/README.md
+++ b/internal/gui/tests/README.md
@@ -11,6 +11,9 @@ fixtures. It checks session folder/model filters and the main model picker in
 Chromium and WebKit, including wheel, scrollbar track/thumb, keyboard selection
 and dismissal. It does not start the backend or read local user configuration.
 
+`provider-levels-scroll.test.cjs` keeps the provider editor's scrollable model
+list in place after saving a reasoning level farther down the list.
+
 `click-scroll.test.cjs` holds the rule that a click never moves the page
 (see "where the reader is" in `app.js`): on the Routing page, Live and a day
 picked in turn with the list scrolled to its end; a click whose handler sets
@@ -510,7 +513,7 @@ WebKit.
 With Node.js and Playwright available:
 
 ```sh
-node --test internal/gui/tests/menu-scroll.test.cjs internal/gui/tests/click-scroll.test.cjs internal/gui/tests/panel-fold.test.cjs internal/gui/tests/panel-routing.test.cjs internal/gui/tests/gateway-fold.test.cjs internal/gui/tests/routing-kind.test.cjs internal/gui/tests/balance-fix.test.cjs internal/gui/tests/cli-update.test.cjs internal/gui/tests/login-import.test.cjs internal/gui/tests/agy-launch.test.cjs internal/gui/tests/currency.test.cjs internal/gui/tests/usage-ledger.test.cjs internal/gui/tests/update-check.test.cjs internal/gui/tests/omarchy.test.cjs internal/gui/tests/brand.test.cjs node --test internal/gui/tests/signin-callback.test.cjs internal/gui/tests/routing-steady.test.cjs internal/gui/tests/old-webkit.test.cjs internal/gui/tests/session-terminal.test.cjs internal/gui/tests/text-size.test.cjs internal/gui/tests/zcode-site.test.cjs internal/gui/tests/rail-tip.test.cjs internal/gui/tests/sync-update.test.cjs internal/gui/tests/plugin-signin.test.cjs internal/gui/tests/plugin-market.test.cjs internal/gui/tests/s3-sync.test.cjs internal/gui/tests/routing-wb-refused.test.cjs internal/gui/tests/routing-shape.test.cjs internal/gui/tests/market-have.test.cjs internal/gui/tests/sessions-today.test.cjs internal/gui/tests/routing-side-calls.test.cjs internal/gui/tests/import-all-skills.test.cjs internal/gui/tests/routing-flood.test.cjs internal/gui/tests/routing-busy.test.cjs internal/gui/tests/own-skill.test.cjs internal/gui/tests/routing-manual.test.cjs internal/gui/tests/tray-usages.test.cjs internal/gui/tests/provider-remove.test.cjs internal/gui/tests/signin-link.test.cjs internal/gui/tests/tray-inuse.test.cjs internal/gui/tests/codex-auto-reset.test.cjs internal/gui/tests/routing-auto-reset.test.cjs internal/gui/tests/claude-resets.test.cjs internal/gui/tests/library-toggle-status.test.cjs internal/gui/tests/library-all.test.cjs internal/gui/tests/routing-reroute-title.test.cjs internal/gui/tests/plain-names.test.cjs internal/gui/tests/panel-effort.test.cjs internal/gui/tests/agent-models-all-hidden.test.cjs internal/gui/tests/omp-roles.test.cjs internal/gui/tests/claude-effort.test.cjs internal/gui/tests/remote-magpie.test.cjs internal/gui/tests/qoder-cn-tile.test.cjs
+node --test internal/gui/tests/menu-scroll.test.cjs internal/gui/tests/click-scroll.test.cjs internal/gui/tests/panel-fold.test.cjs internal/gui/tests/panel-routing.test.cjs internal/gui/tests/gateway-fold.test.cjs internal/gui/tests/routing-kind.test.cjs internal/gui/tests/balance-fix.test.cjs internal/gui/tests/cli-update.test.cjs internal/gui/tests/login-import.test.cjs internal/gui/tests/agy-launch.test.cjs internal/gui/tests/currency.test.cjs internal/gui/tests/usage-ledger.test.cjs internal/gui/tests/update-check.test.cjs internal/gui/tests/omarchy.test.cjs internal/gui/tests/brand.test.cjs node --test internal/gui/tests/signin-callback.test.cjs internal/gui/tests/routing-steady.test.cjs internal/gui/tests/old-webkit.test.cjs internal/gui/tests/session-terminal.test.cjs internal/gui/tests/text-size.test.cjs internal/gui/tests/zcode-site.test.cjs internal/gui/tests/rail-tip.test.cjs internal/gui/tests/sync-update.test.cjs internal/gui/tests/plugin-signin.test.cjs internal/gui/tests/plugin-market.test.cjs internal/gui/tests/s3-sync.test.cjs internal/gui/tests/routing-wb-refused.test.cjs internal/gui/tests/routing-shape.test.cjs internal/gui/tests/market-have.test.cjs internal/gui/tests/sessions-today.test.cjs internal/gui/tests/routing-side-calls.test.cjs internal/gui/tests/import-all-skills.test.cjs internal/gui/tests/routing-flood.test.cjs internal/gui/tests/routing-busy.test.cjs internal/gui/tests/own-skill.test.cjs internal/gui/tests/routing-manual.test.cjs internal/gui/tests/tray-usages.test.cjs internal/gui/tests/provider-remove.test.cjs internal/gui/tests/signin-link.test.cjs internal/gui/tests/tray-inuse.test.cjs internal/gui/tests/codex-auto-reset.test.cjs internal/gui/tests/routing-auto-reset.test.cjs internal/gui/tests/claude-resets.test.cjs internal/gui/tests/library-toggle-status.test.cjs internal/gui/tests/library-all.test.cjs internal/gui/tests/routing-reroute-title.test.cjs internal/gui/tests/plain-names.test.cjs internal/gui/tests/panel-effort.test.cjs internal/gui/tests/agent-models-all-hidden.test.cjs internal/gui/tests/omp-roles.test.cjs internal/gui/tests/claude-effort.test.cjs internal/gui/tests/remote-magpie.test.cjs internal/gui/tests/qoder-cn-tile.test.cjs internal/gui/tests/provider-levels-scroll.test.cjs
 ```
 
 If Playwright is installed outside the repository, set `NODE_PATH` to the
diff --git a/internal/gui/tests/provider-levels-scroll.test.cjs b/internal/gui/tests/provider-levels-scroll.test.cjs
new file mode 100644
index 00000000..6bc78703
--- /dev/null
+++ b/internal/gui/tests/provider-levels-scroll.test.cjs
@@ -0,0 +1,70 @@
+// A saved reasoning level redraws the provider editor without moving its
+// scrollable model list back to the first model.
+const assert = require("node:assert/strict");
+const fs = require("node:fs/promises");
+const path = require("node:path");
+const { test } = require("node:test");
+const { chromium, webkit } = require("playwright");
+
+const assets = path.resolve(__dirname, "../assets");
+const levels = ["none", "low", "medium", "high"];
+const state = { agents: [], profiles: [], settings: { lang: "en", theme: "light" } };
+
+function serve(posts) {
+  const models = Array.from({ length: 10 }, (_, i) => ({ id: `model-${i + 1}`, name: `Model ${i + 1}`, on: true, efforts: levels }));
+  const provider = { id: "relay", name: "Relay", icon: "generic", chat: "https://relay.example/v1", responses: "", anthropic: "", models, agents: [], key: { set: true, masked: "sk-…1234" }, ready: true };
+  const providers = { providers: [provider], presets: [], excluded: [], gateway: { running: true, window: true } };
+  return async (route) => {
+    const url = new URL(route.request().url());
+    const json = (data) => route.fulfill({ json: data });
+    if (url.pathname === "/boot.js") return route.fulfill({ contentType: "text/javascript", body: 'window.bootPrefs = {lang:"en",theme:"light",web:true};' });
+    if (url.pathname === "/wails/runtime.js") return route.fulfill({ contentType: "text/javascript", body: "export const Window = {};" });
+    if (url.pathname === "/api/state") return json(state);
+    if (url.pathname === "/api/providers") return json(providers);
+    if (url.pathname === "/api/groups") return json({ groups: [] });
+    if (url.pathname === "/api/provider/efforts") {
+      const body = route.request().postDataJSON();
+      posts.push(body);
+      const model = models.find((m) => m.id === body.model);
+      model.kept = body.efforts.length ? body.efforts : undefined;
+      return json(providers);
+    }
+    if (url.pathname.startsWith("/api/")) return json({});
+    const file = path.join(assets, url.pathname === "/" ? "index.html" : url.pathname);
+    await route.fulfill({ body: await fs.readFile(file), contentType: { ".html": "text/html", ".js": "text/javascript", ".css": "text/css", ".svg": "image/svg+xml", ".png": "image/png" }[path.extname(file)] });
+  };
+}
+
+for (const engine of (process.env.BROWSER ? [process.env.BROWSER] : ["chromium", "webkit"])) {
+  test(`${engine}: changing a model's reasoning level keeps the model list in place`, async (t) => {
+    const browser = await (engine === "webkit" ? webkit.launch() : chromium.launch({ channel: process.env.PLAYWRIGHT_CHANNEL || "chromium" }));
+    t.after(() => browser.close());
+    const page = await (await browser.newContext({ viewport: { width: 900, height: 720 }, reducedMotion: "reduce" })).newPage();
+    page.setDefaultTimeout(5000);
+    const errors = [], posts = [];
+    page.on("pageerror", (e) => errors.push(e.message));
+    await page.route("**/*", serve(posts));
+    await page.goto("http://magpie.test/?view=providers");
+    await page.locator(".row.provider").click();
+    await page.getByRole("button", { name: "Names & levels" }).click();
+    const list = page.locator(".mnames:not([hidden])");
+    assert(await list.evaluate((e) => e.scrollHeight > e.clientHeight), "fixture must overflow");
+    await list.evaluate((e) => { e.scrollTop = 260; });
+    const before = await list.evaluate((e) => e.scrollTop);
+    assert(before > 0);
+    const fifth = page.locator(".mname", { has: page.locator("code", { hasText: "model-5" }) });
+    const old = await list.elementHandle();
+    await fifth.getByRole("checkbox", { name: "low" }).uncheck();
+    await page.waitForFunction((e) => !e.isConnected, old);
+    assert.deepEqual(posts.at(-1), { id: "relay", model: "model-5", efforts: ["none", "medium", "high"] });
+    assert.equal(await fifth.getByRole("checkbox", { name: "low" }).isChecked(), false);
+    assert.equal(await list.evaluate((e) => e.scrollTop), before);
+    const next = page.locator(".mname", { has: page.locator("code", { hasText: "model-6" }) });
+    const current = await list.elementHandle();
+    await next.getByRole("checkbox", { name: "high" }).uncheck();
+    await page.waitForFunction((e) => !e.isConnected, current);
+    assert.deepEqual(posts.at(-1), { id: "relay", model: "model-6", efforts: ["none", "low", "medium"] });
+    assert.equal(await list.evaluate((e) => e.scrollTop), before);
+    assert.deepEqual(errors, []);
+  });
+}