Bug 511516

Created attachment 186412 [details]
Photo from the screen

SUMMARY
As reported downstream in the Manjaro forums (https://forum.manjaro.org/t/issues-with-the-screenshot-tool-of-kde-spectacle/182206), I am experiencing issues with spectacle since an update a few weeks ago.
When taking a screenshot, the screen gets squeezed vertically and appears and appears as an overlay on top of the real screen.
Furthermore, when using the rectangular selection tool, the area of the actual screenshot doesn't match the selected region.
Also, the quality is much lower than before.

I noticed that this issue only occurs in a special screen combination.

STEPS TO REPRODUCE
1. Use 3 displays. Primary in the middle (in my case 4k with 150% scaling), secondary left (1080p no scaling), tertiary right (UHD 150%).
2. Disable the tertiary screen in the settings, but keep it attached.
3. Take a screenshot

OBSERVED RESULT
The issues from my summary can be observed

EXPECTED RESULT
The screen should not be squeezed and only the selected area should be screenshotted.

SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux 
KDE Plasma Version: 6.5.1
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0
Kernel Version: 6.17.6-1-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 6 × Intel® Core™ i5-8600K CPU @ 3.60GHz
Memory: 32 GiB of RAM (31.2 GiB usable)
Graphics Processor 1: AMD Radeon RX 6800
Graphics Processor 2: Intel® UHD Graphics 630
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7B46
System Version: 1.0

ADDITIONAL INFORMATION
I add a screenshot from my display settings, a photo from the screen when the glitch occurs and a screencast while taking the screenshot.