Found in

• 110.0a1 (2022-12-28)

Affected versions

• 110.0a1 (2022-12-28)

Tested platforms

• Affected platforms: Windows 10
• Unaffected platforms: macOS, Ubuntu

Steps to reproduce

1. Launch the Fx profile manager.

Expected result

• The profile manager is opened accordingly without any glitches.

Actual result

• There is a glitch with the size of the profile manager window on startup.

Regression range
This is a regression from 2022-12-27. It worked ok on 110.0a1 (2022-12-27, build id: 20221227093156) and start broken on 110.0a1 (2022-12-27, build id: 20221227211321). Will try to find a more detailed regression range asap.

Regression window:
ttps://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=4b2e3689cea010e9473792bd8f5a8606c862e09d&tochange=7966f6606190515258c3f19ad4d05ed4d317f164

:smaug, since you are the author of the regressor, bug 1804295, could you take a look?

For more information, please visit auto_nag documentation.

I think this is a combination of bug 1795224 and bug 1804295. The first one added sizeToContent call, which triggers second SetSize call, where the height is a tiny bit larger.
Still investigating

Oh, actually this is even older than bug 1795224.

In this case we can do easier things than going through the shell and
assuming all sizes go through the window.

(didn't mean to steal, can move comment 8 to another bug if / as needed)

Backed out changeset 7f9088d3354d (Bug 1807838) for causing bc failures on browser_modal_resize.js.
Backout link
Push with failures <--> bc4
Failure Log

https://hg.mozilla.org/mozilla-central/rev/01f0f5a5c206

Verified - Fixed in latest Nightly 110.0a1 (build id: 20230111043919) using Windows 10. The profile manager window is now opened accordingly.

Comment on attachment 9311408 [details]
Bug 1807838 - Simplify AppWindow::SizeShellTo when sizing to the window shell. r=smaug

Revision D166367 was moved to bug 1810614. Setting attachment 9311408 [details] to obsolete.