FancyZones doesn't properly distinguish between main and sub-windows like Thunderbird "send dialogue"

[creative-resort]

Microsoft PowerToys version

0.80.1

Installation method

PowerToys auto-update

Running as admin

No

Area(s) with issue?

FancyZones

Steps to reproduce

Open Thunderbird and snap main window to a zone. Start writing a new message and snap the opened dialogue to a different zone. (optionally) let a task alarm go off, focus the alarm dialogue and snap it to a different zone. Close the sub-window dialogues. Close Thunderbird. Reopen Thunderbird. Write a new message.

✔️ Expected Behavior

Thunderbird should remain snapped to the initial zone, Message composition dialogue should open in the second zone, that it was snapped to. Alarm dialogue should open in the third zone.

❌ Actual Behavior

Thunderbird reopens in either the second or third zone, instead of remaining in its own assigned zone. Upon re-assigning of Thunderbird to the initial zone, the other dialogues are opened also in the initial zone. There doesn't seem to be a distinction made between the different windows.

Other Software

Thunderbird 115.10.1 64-Bit.

[github-actions[bot]]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one and thumbs upping the other issue to help us prioritize it. Thank you!

Open similar issues:

• FancyZones: When a window in a zone is closed and reopened, FZ seems to get confused (#17387), similarity score: 0.78
• FZ No Longer differentiates between Outlook 365 App Window and Open Mail Window (#17685), similarity score: 0.77
• FancyZones do not correctly set the size of Mailbird (#19028), similarity score: 0.77

Closed similar issues:

• FancyZones "Move newly created windows to their last known zone" moves windows when switching virtual desktops (#27859), similarity score: 0.78
• FancyZones - Move newly created windows to their last known zone (#6865), similarity score: 0.78

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