Hello.

I installed Krita 4.2.9 yesterday and it's buggy to the point of being nearly unusable... Whenever I try to use the Mirror tools, Krita gets unresponsive and ultimately crashes. It won't let me open the Settings > Configure Krita, because it immediately crashes when I do that. The lines were ending up being very jittery yesterday, and now today, they aren't jittery anymore but the pen pressure is gone. I don't suppose both of the problems emerged solely due to my graphic tablet (Wacom Intuos Art), because I tried testing it on the other art program, Medibang, where everything worked perfectly fine and I couldn't reproduce the issues on it; tried so yesterday and today as well. I also tried uninstalling and reinstalling Krita, but the issues persist.

I remember using Krita last year without any problems so I'm considering to try the older versions instead, although I'd really want to use the latest version for the obvious reasons. Wondering if anyone else's having issues similar to mine? I'm using Windows 7 32-bit.

As I understand the situation, the krita developers can't support Windows 7 anymore because it's way past end-of-life.
As a long shot, you could try using the portable .zip package, which may avoid any problems due to whatever Windows does in its internal workings.
Failing that, you could get and try whatever version you were previously happy with: https://download.kde.org/stable/krita/ (4.2.7.1 or 4.2.8 ) and the portable .zip package would be a good idea.

If anyone else was having similar issues with 4.2.9, there would be lots of comments and complaints about it but there aren't as far as I've noticed.

Since you have crashes when opening the settings dialog, I suspect that the graphics drivers for your system are broken. And you won't updates to drivers because our OS is no longer supported by Microsoft -- or anyone, really.

Uninstalling and reinstalling won't solve any problem. Try resetting Krita's settings first: https://docs.krita.org/en/KritaFAQ.html ... figuration.

Thank you for the responses! Makes sense. It didn't occur to me that my OS might be causing the issues. I'm looking into getting Windows 10 soon, so I guess I'll stick with using older version in the meantime.