Bug 491801

Summary:	On one of my machines, KDE Plasma maximizes all windows even on large screen, even for windows that are meant kind of tiny
Product:	[Plasma] kwin	Reporter:	Ellie <el>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DOWNSTREAM
Severity:	normal	CC:	fanzhuyifan, xaver.hugl
Priority:	NOR
Version First Reported In:	6.1.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Screenshot of maximized notification window covering entire screen

Description Ellie 2024-08-16 23:36:42 UTC

Created attachment 172680 [details]
Screenshot of maximized notification window covering entire screen

SUMMARY

On one of my machines, KDE Plasma maximizes all windows even on large screen, even for windows that are meant kind of tiny. When I research this topic online I find guides to set up manual special rules to make this happen intentionally, which tells me this happening by default without special rules is probably not a bug. Sometimes it even maximizes the notification windows which suddenly covers the entire screen, although most of the time it's just all regular windows and dialogs (which is still rather jarring on a larger screen).

Since this only happens on my postmarketOS machine it could be a packaging bug I suppose, I'm not seeing this on openSUSE. But it seems like the distribution people so far seem clueless as well as to what is causing this. Downstream ticket is here: https://gitlab.com/postmarketOS/pmaports/-/issues/3101 My apologies if this isn't KDE's fault.

STEPS TO REPRODUCE

1. Install KDE Plasma 6, start Wayland session
2. Connect large external screen
3. Open any application like Firefox, Thunderbird, KWrite, ...

OBSERVED RESULT

Any window that opens, even about dialogs and other smaller popup dialogs, are maximized over the entire screen.

EXPECTED RESULT

Unless the screen is tiny to start with or the app was maximized last time at the time of being closed, windows shouldn't spawn maximized again.

SOFTWARE/OS VERSIONS

Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: postmarketOS Edge
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2

ADDITIONAL INFORMATION

Comment 1 Ellie 2024-08-16 23:38:21 UTC

Correction: I meant to write: "which tells me this happening by default without special rules is probably a bug"

I apologize for the confusion.

Comment 2 Zamundaaa 2024-08-17 00:01:30 UTC

Under window behavior -> advanced in system settings, is "window placement" perhaps set to "maximized"?

Comment 3 Ellie 2024-08-17 00:09:09 UTC

It is. Is that meant to be the default? I assume that confirms packaging quirk or error.

But is this "maximize" also meant to apply to the KDE desktop notifications? Should I leave the ticket open for that, or close it right away?

My apologies for what seems to have been largely an invalid report from me.

Comment 4 Ellie 2024-08-17 00:15:42 UTC

I'll close this for now, assuming this is largely invalid. Sorry again.

Comment 5 Zamundaaa 2024-08-17 00:23:14 UTC

The default is "centered". PostmarketOS probably overrides that.

(In reply to Ellie from comment #3)
> But is this "maximize" also meant to apply to the KDE desktop notifications?
It should not do that