Running QGIS (using currently 3.14.1, but this happens in older versions as well) on Windows 10, I sometimes encounter the problem of a task (algorithm) running endlessly without the possibility to stop it. The only workaround is to force QGIS to close, losing temporary layers.
In this specific case, I started vectorize - it's running for two hours and I don't know for how long it will continue. I would like to change parameters and start it again. However, the Cancel button is not active.
There are other cases of tasks that I canceled, but they still continue to run in the background. So it seems to be a general issue of QGIS.
Is there a solution to cancel running algorithms without closing the program?