Found in

• Firefox 108.0b5

Affected versions

• Firefox 108.0b5
• Latest Nightly 109.0a1

Unaffected versions

• Firefox 107.0 RC

Tested platforms

• Affected platforms: Windows 10, macOS 11.6, Ubuntu 22.04
• Unaffected platforms: N/A

Preconditions

• Have the Search Bar enabled in the right side of the URL bar.
• Remove the separator from the right side the URL bar.

Steps to reproduce

1. Place the cursor between URL bar and Search Bar
2. Click and drag from right to left the in order to resize the Search Bar (and URL bar)

Expected result

• The Search Bar can be resized from max to min length from one action

Actual result

• The Search Bar can only be resized from max to min length after using more then one action.

Regression range

• First bad: fde57ffc3be69783c38c9abaf96d673d683e7e15
• Last good: a9df937f88903ab2d7ecd4a977273fd500aeca2b
• Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=a9df937f88903ab2d7ecd4a977273fd500aeca2b&tochange=fde57ffc3be69783c38c9abaf96d673d683e7e15
• Potentially regressed by: Bug 1794630 - Improve splitters for browser chrome use cases.

Additional notes

• Gif showing the issue is attached.

I see, so this is only iff you've gone over the max size (then reducing back to the minimum blocks and you need to pull again). I think this is really minor so I'm not going to actively look into fixing it, but it's worth tracking.

Steps to reproduce:

1. Add search bar in toolbar from about:preferences#search

2. Maximize the browser

3. Drag the splitter to make the search bar as wide as possible

4. Restore browser sizemode

5. Attempt to resize the search bar by dragging the splitter

Actual results:
The search bar cannot be resized at all.
Screencast: https://youtu.be/OYMaAHLabvQ

(In reply to Alice0775 White from comment #2)

Steps to reproduce:

1. Add search bar in toolbar from about:preferences#search
2. Maximize the browser
3. Drag the splitter to make the search bar as wide as possible
4. Restore browser sizemode
5. Attempt to resize the search bar by dragging the splitter

Actual results:
The search bar cannot be resized at all.
Screencast: https://youtu.be/OYMaAHLabvQ

Thanks for the better steps to repro this. I did find that you can resize the Search Bar again but indeed, very hard (after a few tries).

Set release status flags based on info from the regressing bug 1794630