1898605 - After a tab is dragged out to become a window, drag actions stop working in Firefox

Status: RESOLVED DUPLICATE of bug 1897115

(Core :: Widget: Gtk, defect, P3)

Description

[Maximillian Laumeister]

Attachment: Screen recording of bug

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:126.0) Gecko/20100101 Firefox/126.0

Steps to reproduce:

• Open a second tab
• Drag the second tab out to create a new window
• Dragging does not work anymore until Firefox is restarted.

This is a recent bug, starting in the last week for me on stable. I suspect it's due to the v126.0 update.

This bug is also reproducible on nightly 127.0a1 (2024-04-27).

OS info: Linux Mint Cinnamon 21.3

Actual results:

• Tabs can no longer be rearranged by dragging
• Images and links can no longer be dragged out of web pages, to tab bar or to desktop
• Bookmarks in toolbar can no longer be dragged
• Pages can no longer be dragged from the address bar's "lock" icon into the bookmarks toolbar

Other than dragging, all other parts of Firefox seem to function properly. You can browse the web normally, just no more dragging.

Expected results:

Drag options still work normally in Firefox.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Gtk' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Martin Stránský [:stransky] (ni? me)]

Can you please use mozregression to find broken commit?
https://fedoraproject.org/wiki/How_to_debug_Firefox_problems#Use_Mozregression_tool

Also can you try latest nightly?
https://fedoraproject.org/wiki/How_to_debug_Firefox_problems#Testing_Mozilla_Nightly_binaries

Thanks.

Comment 3

[Maximillian Laumeister]

Thanks, I didn't realize the nightly ppa I found was so out of date.

I just tested it on nightly 128.0a1 (2024-05-24) (64-bit), and I could not reproduce the buggy behavior. It appears to be fixed.

Here are the pushlogs mozregression gave me after doing a bisect. Looks like it directly implicates a dragging-related commit.

https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=eeb2c178aa51da771855f2e5983385a5568b3de7&tochange=6c14242aa73e30ddd1dcb8c3ccdac18b5d8ff5c2

https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=f76227b1c05f51b70e7d261e993b5cfa5fd8ee70&tochange=7a41e44c6e1aa0f57d7286a8427e78e75f972547

Comment 4

[Martin Stránský [:stransky] (ni? me)]

Thanks for testing, should be Bug 1897115 then.