Bug 475065

Created attachment 161977 [details]
Image showing spectacle misalignment

SUMMARY
***
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***


STEPS TO REPRODUCE
1. Setup a dual-monitor system with the external screen on the left and the laptop screen on the right.
2. In KDE plasma, set global scale to 125%
3. Launch spectacle with rectangular region with `spectacle -r -b`

OBSERVED RESULT
The spectacle window on the laptop screen shows misaligned screen contents (see picture)

EXPECTED RESULT
The spectacle window on the laptop screen should display correctly aligned screen contents.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.110.0
Qt Version: 5.15.10

ADDITIONAL INFORMATION
The issue disappears when I run with
```
QT_SCREEN_SCALE_FACTORS=1 spectacle -r -b
```
The default value of QT_SCREEN_SCALE_FACTORS is 
```
eDP-1=1.25;DP-1=1.25;DP-2=1.25;DP-1-0=1.25;DP-1-1=1.25;HDMI-1-0=1.25;DP-1-2=1.25
```