SUMMARY

When i add a filter mask to one layer, the canvas darkens and cannot properly see the changes until it is applied. That didn't happen in the old version. (one year ago).
Greetings.

STEPS TO REPRODUCE
1. Select layer -> add filter mask

OBSERVED RESULT

The program takes on a secondary window hierarchy and becomes dark. This also darkens the canvas (and can't see how the filter modifies the image appropriately).

EXPECTED RESULT

That the screen does not darken and you can modify the filter until you reach the desired values ​​before applying it

SOFTWARE/OS VERSIONS

KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11

ADDITIONAL INFORMATION

I looked at my system settings to see if I could modify the color that the secondary windows take on but I couldn't find a way to modify it.