2024105 - Visual glitch when reordering tab via drag&drop

Status: RESOLVED FIXED

(Firefox :: Tabbed Browser, defect)

Description

[Alice0775 White]

[Tracking Requested - why for this release]: It looks absolutely terrible

The glitch occurs in regardless of Horizontal Tabs and Vertical Tabs.

Steps to reproduce:

1. Open several tabs
2. Reorder the tabs so that this one is the last one

Actual results:
When you drop a tab in the position where it would become the last tab, it moves back to its original position before finally becoming the last tab.
Screencast: https://youtu.be/6b7f25xGmSI

Expected results:
No such glitch

Regression window:
https://hg-edge.mozilla.org/integration/autoland/pushloghtml?fromchange=ce8b3c55a333a676212495f41c910d27afbc4354&tochange=7df4242423c1a471e1782a255292920e8cd1230c

Comment 1

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

:nsharpley, since you are the author of the regressor, bug 2020110, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Comment 2

[Alice0775 White]

And also reproduce on Linux Mint22.2.

Comment 3

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

The bug is marked as tracked for firefox150 (nightly). However, the bug still isn't assigned.

:cbellini, could you please find an assignee for this tracked bug? Given that it is a regression and we know the cause, we could also simply backout the regressor. If you disagree with the tracking decision, please talk with the release managers.

For more information, please visit BugBot documentation.

Comment 4

[Nikki Sharpley (:nikkis) (she/her)]

Backing out the regressor https://bugzilla.mozilla.org/show_bug.cgi?id=2020110

Comment 5

[Donal Meehan [:dmeehan]]

Setting Fx150 status to fixed re: Comment 4

Comment 6

[Niklas Baumgardner [:niklas]]

Bug 2020110 was backed out so this is no longer valid