"Holes" in windows on KDE Neon

[NullDev]

When I select a region and take a screenshot, random rectangular holes appear in the focused window, showing the window or desktop behind it. I used shutter before on the same Laptop with Ubuntu 18.04 + Gnome and never had issues. I recently switched to KDE Neon (Ubuntu 18.04 + KDE Plasma) and shutter doesn't appear to function correctly anymore.

Example: https://i.imgur.com/XtFZzSx.png

The rectangles are never at the same position and sometimes don't appear at all. Shutter also takes quite some time to take the screenshot. It appears to be significantly slower on KDE.

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Shutter Version: 0.94 / Rev.1290

Operating System: KDE neon 5.17
(Linux KDE-Neon 5.0.0-36-generic #39~18.04.1-Ubuntu SMP Tue Nov 12 11:09:50 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux)

KDE Plasma Version: 5.17.3
KDE Frameworks Version: 5.64.0
Qt Version: 5.13.2
Kernel Version: 5.0.0-36-generic
OS Type: 64-bit

[Michael Kogan (michael-kogan)]

Might be worth playing around with KDE's desktop effects settings. Possibly, one of the effects can be pinned down as the cause of the problem

[l4d3 (l4d3)]

This happens with me as well. At first it seemed to only happen with transparent panels, but it happens in a gtk application with breeze theme as well. I don't know how to help as I'm no coder.

OS: Manjaro Linux x86_64
Kernel: 5.4.34-1-MANJARO
Resolution: 1920x1200, 1920x1080
Using the proprietary video-nvidia-440xx

Can provide more given instructions.