Some secondary windows are occasionally blurry

[subhasutra]

Some specific windows e.g. file picker, properties of a file are blurry occasionally. It gets fixed usually by moving the windows a bit or on its own sometimes after few seconds. It may not be very clearly visible but here are the screenshots.

Blurry windows

Normal

The issue is not there on xorg. For wayland it's not there with breeze or klassy. And I'm not sure exactly when it started, but probably a week or two ago.

Edit: Also downgrading mesa didn't help, so not related to drivers most likely. The environment variable mentioned in the readme didn't work either.

[Bali10050]

Try changing your font, and the subpixel rendering settings, it might help.

[subhasutra]

It didn't help. One thing I have noticed is when the window fixes itself, the whole part below headerbar moves up by a very small margin (probably 1 pixel), and the blurriness disappears. Also it never happens in the apps itself, always something secondary in the app like settings of that app.

when the window is blurry
when the blurriness is fixed

[DeltaCopy]

Do you use fractional scaling ?

[subhasutra]

@DeltaCopy no I don't.

Another kind of weird thing I have noticed is, it's not random as I said initially, but rather happens every time I open properties of a file. But not for the properties of a folder.
Were you able to reproduce the problem?

[subhasutra]

This might be some qt issue, since I saw it with kvantum as well. For example clicking open in kate, opens the file picker (the files section of it) as blurry, moving the window solves it, same as lightly.

[Bali10050]

The best I can think of is that the position of the font isn't set as an int somewhere, but I have no idea where to look for it, because I can't even see the issue happening on my machine

[subhasutra]

Apologies for the late reply. @Bali10050 I suppose in that case it would be harder to fix. I am leaving my observations here, in case they help or someone faces similar issue.

1. Clicking open in kate, the file picker window is blurry, moving it fixes it - happens in lightly, kvantum and even in breeze.
2. Opening properties of a file (not folders tho, they are fine) such as pictures or audio, the properties window is blurry, again moving it fixes it - happens only in lightly.

These are the ones I have noticed, and are persistent and happen every single time. I don't use fractional scaling, neither nvidia. And these happen only in wayland.