Bug 487620

Summary: Adding filter mask - window hides canvas
Product: [Applications] krita Reporter: thisisreal
Component: UsabilityAssignee: Krita Bugs <krita-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal CC: griffinvalley, thisisreal
Priority: NOR    
Version First Reported In: 5.2.2   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: main canvas window and filter mask window after moving the filter mask window

Description thisisreal 2024-05-27 12:23:17 UTC
Created attachment 169873 [details]
main canvas window and filter mask window after moving the filter mask window

SUMMARY
The apply a filter mask window hides the main canvas.

STEPS TO REPRODUCE
1. Open a project with a picture within a layer
2. On this layer, add a filter mask.
3. Stay in the filter mask configuration window on top of the canvas.
4. Now try to move the filter mask window to the side. The goal is to be able to see the canvas and the live preview of changes you would apply with the filter mask on the canvas.

OBSERVED RESULT
As soon as I move the filter mask window, the main canvas window shrinks in size and moves along with the filter mask window. The canvas window is continously placed behind the filter mask window and hidden. 

EXPECTED RESULT
As tested on Windows 10, I would expect the filter mask window to be movable independently from the main canvas window. I would expect that the main canvas window in the background keeps its size and position on the screen.
This is needed to be able to see the preview of the applied changes of the filter mask directly on the canvas.
(On Windows 10, it was working)

SOFTWARE/OS VERSIONS
Windows: Windows 10
Linux: Zorin OS 17.1

ADDITIONAL INFORMATION
Comment 1 wolthera 2024-05-27 12:26:52 UTC
Hi, this is likely something that the desktop enviroment or window manager does with modal windows. We have no control over this, so you will have to configure your enviroment to allow moving modal windows.
Comment 2 thisisreal 2024-05-27 12:33:03 UTC
Alright, thanks for the quick response. 
Seems to be an issue with recent Ubuntu versions that this behavior (centering modal windows) is set by default and must be changed manually