Bug 387545

Summary: invert selection does not work
Product: [Applications] krita Reporter: a.hormann
Component: ToolsAssignee: Krita Bugs <krita-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal CC: griffinvalley
Priority: NOR    
Version First Reported In: 3.3.2   
Target Milestone: ---   
Platform: Microsoft Windows   
OS: Microsoft Windows   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: left:background right:inverted

Description a.hormann 2017-12-03 10:03:20 UTC
Created attachment 109186 [details]
left:background right:inverted

I selected the background of a photo with the continous selection tool and refined the selection with Shift-Clicks.
Then I inverted the selection. Doing so created artifacts. Calling Invert Selection again resulted in the original selection, but the inverted one was broken.
I attached cropped screenshots of a region: left is with background selected, right is the inversion
Comment 1 wolthera 2017-12-03 10:41:35 UTC
What is probably going on here is that Krita's selection system can handle semi-transparent selections, but they are not visible in the standard display mode:

Turn off anti-aliasing: https://docs.krita.org/Contiguous_Selection_Tool

Or turn on the alternate display mode: https://docs.krita.org/Selections#Display_Modes

If this doesn't solve your problem, reopen the bug.