1973213 - Vertical bar icon buttons are not compact when there's less than 6 buttons are on it

Status: RESOLVED DUPLICATE of bug 1954155

(Firefox :: Sidebar, defect)

Description

[[:anutrix]]

Attachment: Screenshot 2025-06-20 164130.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0

Steps to reproduce:

1. Enabled Vertical Tab bars.
2. Disable auto-hide. Reproducible without this step too.
3. Click 'Customize sidebar'.
4. Reduce icons(including Firefox tools section and Sidebar extensions section) from 6 to 5 or less.

Actual results:

The icon buttons are no longer compact. And instead of left to right, they go from top to bottom with text next to each of them.
Lot of wasted space. Also, number of extensions should not cause involuntary waste of vertical space.
I can now see 5-6 less tabs than before.

Expected results:

Icons should should stay compact. I will attach image of expected results. This is only possible when I have 2 or more sidebar extension icons but not less than that.

Comment 1

[Kelly Cochrane [:kcochrane]]

Hi, this was fixed in bug 1954155 in build 141.