SUMMARY The touch docker should let you resize your brushes with two buttons, but neither seem to work for me, even after updating to 4.2.5. I tried with my tablet and mouse, and nothing happened. STEPS TO REPRODUCE 1. Open docker 2. Click on Increase brush size or decrease 3. Brush strokes remain same size, and the brush size display stays the same. SOFTWARE/OS VERSIONS Windows: 10 ADDITIONAL INFORMATION I had some others share with me they had this same issue.
I can confirm this on Linux with the 4.2.5 appimage. The other buttons work, except for the second to last button—not sure if it's broken too or if just don't know what to look for because I don't know what it's supposed to do. It's missing from the manual here: https://docs.krita.org/en/reference_manual/dockers/touch_docker.html
Looks like this was already broken in 4.2.3
*** Bug 416334 has been marked as a duplicate of this bug. ***
Note that the duplicate report says that there are three buttons that are not working: "Pressing Increase/Decrease Brush Size button does not affect brush size. Pressing Switch Background and Foreground Colors does not switch active colors."
Can't repro, the brush size buttons work here on Windows with latest nightly. Also, there is no "Switch Background and Foreground Colors". The second-to-last button is "Switch to Previous Preset".
Seems to work in 4.4.5 and in Krita 5.0-beta1.