So I was drawing using a 5.1.0 prealpha and right now, I have a file which causes Krita to indefinitely take time computing something. I just clicked on the layer visibility button, or even put a simple brush stroke, and then it froze Krita.
Maybe the file has an issue that can be inspected to fix something.
Here it is in case you’re curious :
Not a bug because it’s not a bug.
Now, other than this, using CTRL+ALT+J to paste the selection from a layer onto a new layer, takes more time to process for some reason, even for a very small amount of data.