When I use a normal brush on my Surface Pro 4 pen, I used to be able to toggle the eraser brush in Krita by flipping the pen around and using the button on top.
Now, it seems to turn eraser mode on, but it doesn't go back to normal brush mode when I turn it back around and write with the tip.
I can't tell if Krita has changed functionality in their brushes with the latest update, or if Microsoft has updated their drivers and made my pen buttons work differently.
Can anyone help me figure out how I can erase with the top button on my Ntrig pen and then go back to drawing with the tip when I turn it back around?
Thank you!

I have the same problem with Wacon Intuos, since I installed Krita 3.1.2 on Windows 10.

Yeah, that's this bug: https://bugs.kde.org/show_bug.cgi?id=375878

It snuck in when we were trying to fix another one