fix: fixed User Login Cancelled Error for firefox cp-13.9.0

[lwin-kyaw]

Description

Changelog

CHANGELOG entry: null

Related issues

Fixes: #37645

Manual testing steps

1. In firefox, start new onboarding with social login.
2. Before completing the social login, close the window.
3. User should not see Login Error modal

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

---

Note

Adds cross-browser detection of user-cancelled OAuth login (including Firefox) and updates flows to treat it as a non-error.

• Shared Errors:
  • Add OAuthErrorMessages.USER_CANCELLED_LOGIN_ERROR_FIREFOX.
  • Introduce isUserCancelledLoginError(error) helper for cross-browser detection.
• OAuth Service (app/scripts/services/oauth/oauth-service.ts):
  • Replace #isUserCancelledLoginError() with #getUserCancelledLoginError() returning the actual Error when cancel is detected via checkForLastError() and isUserCancelledLoginError.
  • When no responseUrl, reject with user-cancelled error if present; otherwise default to OAuthErrorMessages.NO_REDIRECT_URL_FOUND_ERROR.
• Onboarding UI (ui/pages/onboarding-flow/welcome/welcome.js):
  • Use isUserCancelledLoginError in login error handlers to suppress UI errors when the user cancels.
  • Map remaining OAuth errors to existing UI error states as before.

^{Written by Cursor Bugbot for commit f3ff026. This will update automatically on new commits. Configure here.}

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[metamaskbot]

✨ Files requiring CODEOWNER review ✨

🔐 @MetaMask/web3auth (1 files, +6 -6)

• 📁 ui/
  • 📁 pages/
    • 📁 onboarding-flow/
      • 📁 welcome/
        • 📄 welcome.js +6 -6

[metamaskbot]

Builds ready [f3ff026]

• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• bundle size: Bundle Size Stats
• user-actions-benchmark: User Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
  • content-script: 0
  • offscreen: 0

UI Startup Metrics (1211 ± 101 ms)

Platform	BuildType	Page	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P 75 (ms)	P 95 (ms)
Chrome	Browserify	Standard Home	uiStartup	1211	1058	1480	101	1293	1399
			load	1045	918	1275	92	1122	1206
			domContentLoaded	1039	913	1268	91	1116	1198
			domInteractive	21	14	74	12	18	53
			firstPaint	629	89	1296	414	1030	1188
			backgroundConnect	226	215	266	8	230	239
			firstReactRender	26	18	44	6	29	40
			getState	22	8	59	11	26	43
			initialActions	0	0	1	0	0	1
			loadScripts	818	693	1048	90	900	982
			setupStore	11	7	34	4	11	17
			numNetworkReqs	13	6	76	20	6	73
	Browserify	Power User Home	uiStartup	2021	1795	2536	247	2367	2536
			load	1093	937	1414	170	1335	1414
			domContentLoaded	1083	933	1402	168	1326	1402
			domInteractive	33	16	88	23	55	88
			firstPaint	520	81	1382	390	993	1382
			backgroundConnect	255	227	279	13	265	279
			firstReactRender	28	24	32	2	29	32
			getState	179	165	204	11	186	204
			initialActions	0	0	1	0	1	1
			loadScripts	839	707	1162	165	1082	1162
			setupStore	11	10	14	1	13	14
			numNetworkReqs	138	75	368	94	242	368
	Webpack	Standard Home	uiStartup	850	716	1238	105	853	1136
			load	619	563	980	87	613	885
			domContentLoaded	611	550	962	84	604	867
			domInteractive	18	12	215	21	15	38
			firstPaint	231	61	969	221	210	744
			backgroundConnect	25	11	67	13	29	54
			firstReactRender	31	18	151	15	35	48
			getState	11	5	32	4	12	17
			initialActions	0	0	1	0	0	1
			loadScripts	608	548	951	81	602	857
			setupStore	12	6	29	5	13	27
			numNetworkReqs	13	6	75	19	8	70
	Webpack	Power User Home	uiStartup	1278	1113	1810	186	1317	1810
			load	647	568	856	104	710	856
			domContentLoaded	627	558	819	92	663	819
			domInteractive	24	13	67	17	45	67
			firstPaint	312	82	818	225	578	818
			backgroundConnect	65	10	269	75	153	269
			firstReactRender	27	25	29	2	29	29
			getState	141	97	178	23	154	178
			initialActions	0	0	1	0	1	1
			loadScripts	623	556	809	89	652	809
			setupStore	12	6	29	8	24	29
			numNetworkReqs	111	68	223	47	165	223
Firefox	Browserify	Standard Home	uiStartup	1495	1307	2026	121	1549	1738
			load	1262	1134	1541	86	1317	1430
			domContentLoaded	1262	1134	1541	86	1317	1429
			domInteractive	112	35	415	59	115	220
			firstPaint	-	-	-	-	-	-
			backgroundConnect	44	26	169	18	53	75
			firstReactRender	27	22	58	6	28	44
			getState	10	4	204	21	7	17
			initialActions	0	0	1	0	0	1
			loadScripts	1236	1115	1518	84	1289	1402
			setupStore	13	8	69	7	13	28
			numNetworkReqs	12	6	64	15	7	54
	Browserify	Power User Home	uiStartup	2239	1932	2983	272	2402	2983
			load	1272	1106	1634	187	1562	1634
			domContentLoaded	1272	1106	1634	187	1562	1634
			domInteractive	182	73	495	163	430	495
			firstPaint	-	-	-	-	-	-
			backgroundConnect	98	29	476	111	112	476
			firstReactRender	41	30	91	16	40	91
			getState	98	57	148	21	112	148
			initialActions	1	0	1	0	1	1
			loadScripts	1241	1087	1554	174	1520	1554
			setupStore	20	5	89	25	33	89
			numNetworkReqs	136	72	320	74	209	320
	Webpack	Standard Home	uiStartup	1623	1457	2308	148	1625	1973
			load	1383	1232	1771	109	1417	1660
			domContentLoaded	1383	1232	1770	109	1417	1660
			domInteractive	96	32	371	42	104	162
			firstPaint	-	-	-	-	-	-
			backgroundConnect	52	25	256	34	53	120
			firstReactRender	30	22	83	11	31	45
			getState	9	4	59	9	8	18
			initialActions	0	0	1	0	0	1
			loadScripts	1350	1211	1742	96	1389	1583
			setupStore	17	7	233	25	15	49
			numNetworkReqs	13	6	68	17	7	65
	Webpack	Power User Home	uiStartup	2547	2148	3405	374	2810	3405
			load	1477	1265	1822	176	1704	1822
			domContentLoaded	1476	1264	1821	176	1704	1821
			domInteractive	166	37	521	142	338	521
			firstPaint	-	-	-	-	-	-
			backgroundConnect	94	30	226	60	128	226
			firstReactRender	40	30	53	6	48	53
			getState	148	91	380	78	171	380
			initialActions	1	0	6	1	1	6
			loadScripts	1441	1217	1741	164	1661	1741
			setupStore	40	5	143	47	69	143
			numNetworkReqs	130	63	300	86	238	300

📊 Page Load Benchmark Results

Current Commit: f3ff026 | Date: 11/10/2025

📄 Localhost MetaMask Test Dapp

Samples: 100

Summary

• pageLoadTime-> current mean value: 1.05s (±53ms) 🟡 | historical mean value: 1.04s ⬆️ (historical data)
• domContentLoaded-> current mean value: 728ms (±50ms) 🟢 | historical mean value: 730ms ⬇️ (historical data)
• firstContentfulPaint-> current mean value: 77ms (±10ms) 🟢 | historical mean value: 78ms ⬇️ (historical data)

📈 Detailed Results

Metric	Mean	Std Dev	Min	Max	P95	P99
pageLoadTime	1.05s	53ms	1.02s	1.34s	1.10s	1.34s
domContentLoaded	728ms	50ms	704ms	1.00s	762ms	1.00s
firstPaint	77ms	10ms	64ms	160ms	88ms	160ms
firstContentfulPaint	77ms	10ms	64ms	160ms	88ms	160ms
largestContentfulPaint	0ms	0ms	0ms	0ms	0ms	0ms

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: -84 Bytes (0%)
• ui: -191 Bytes (0%)
• common: 320 Bytes (0%)

[metamaskbot]

More than one release label on PR. Keeping the lowest one (release-13.9.0) on PR and removing other release labels (release-13.10.0).