So I ended up trying out the latest development version (which is way too freaking loud because they removed sound options somewhere along the way because they "don't actually work in all games") and the only difference is that on the right stick I now have the issues with the west-southwest to southwest area instead of the still occurring issue with the left stick in the south-southwest to southwest area.
Edit: I also submitted a ticket on github.
Edit: I also submitted a ticket on github.