Stay in Smart Window View across Firefox restart (for single current window)
Categories
(Core :: Machine Learning: Frontend, defect, P1)
Tracking
()
People
(Reporter: Gijs, Assigned: jlewis)
References
(Blocks 1 open bug)
Details
(Whiteboard: [genai][switcher])
Attachments
(1 file)
STR:
- current nightly, have only 1 window open, enable the smart window pref
- Open Settings, Go to General and under startup check 'Open previous windows and tabs' ( this sets pref browser.startup.page to 3)
- switch current window into smart window
- Restart Nightly
ER: On restart Nightly should stay in smart window view
AR: back to classic view
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Comment 1•3 months ago
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The severity field is not set for this bug.
:Mardak, could you have a look please?
For more information, please visit BugBot documentation.
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Comment 2•3 months ago
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The severity field is not set for this bug.
:Mardak, could you have a look please?
For more information, please visit BugBot documentation.
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Comment 3•3 months ago
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Comment 4•3 months ago
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i've attached the hackalong patch but for reference, here's how the same restoreWindowFeatures method handled it on the demo build https://github.com/Firefox-AI/firefox-prototypes/blob/6d4eeae66d4e1d8997e6798ce4adf678111d3a3f/browser/components/sessionstore/SessionStore.sys.mjs#L6573-L6576
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Updated•3 months ago
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Comment 6•3 months ago
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Will this also cover the "Restore previous windows and tabs" option being checked from about:preferences ?
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Comment 7•3 months ago
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(In reply to Rares Doghi, Desktop QA from comment #6)
Will this also cover the "Restore previous windows and tabs" option being checked from about:preferences ?
Yes. This already works, "just" not for a single window. Try with multiple windows (all but the initial/one window will work correctly).
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Comment 8•3 months ago
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I tried this with multiple Smart Windows without any Classic windows opened:
For the first try after reopening Firefox it only opened one Classic Window.
2nd Try same scenario I got one Smart Window and one Classic Window, I will keep testing this.
Does it matter if we close it by Hamburger menu > Exit or simply Right clicking the Firefox in the Windows bar and selecting Close Firefox ?
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Comment 10•3 months ago
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Reporter | |
Comment 11•2 months ago
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(In reply to Rares Doghi, Desktop QA from comment #8)
I tried this with multiple Smart Windows without any Classic windows opened:
For the first try after reopening Firefox it only opened one Classic Window.
2nd Try same scenario I got one Smart Window and one Classic Window, I will keep testing this.
Does it matter if we close it by Hamburger menu > Exit or simply Right clicking the Firefox in the Windows bar and selecting Close Firefox ?
How you quit as long as Firefox is completely ended should not matter. Not 100% sure I follow the other descriptions - but either way I expect everything should be fixed in a Nightly with the patch from this bug. Could you verify? If there's more to do we'd like to know ASAP
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Comment 12•2 months ago
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Yes this issue is indeed Verified as fixed in our latest Nightly 149.0a1 (2026-02-12)
This also fixes the Restart with a single or multiple windows as well as Closing and then Starting Firefox with a single or multiple windows.
All windows are restored if the user restores the Previous session from History menu or for having the "Restore previous windows and tabs" option checked.
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Comment 13•2 months ago
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Authored by https://github.com/Mardak
https://github.com/mozilla/enterprise-firefox/commit/75a7b191fae0cd12fd6ee8bd769f1a67e8b0d50d
[enterprise-main] Bug 2010901 - Stay in Smart Window View across Firefox restart (for single current window) r=ai-frontend-reviewers,sessionstore-reviewers,mlucks,sfoster
Description
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