I literally downloaded astropad studio about an hour ago on my iPad pro 12.9, opened files on photoshop and started playing around with the features, including the marquee, pen, brushstroke, with the apple pen.
Inexplicably, the brushstroke marks completely disappeared, leaving only the track marks. I opened the file again and they started showing up again briefly, before disappearing again.
The same thing is now happening directly on the MacBook pro.
I opened other psd files and the brushstroke is working.
This is very upsetting, I have tried to look up this problem but have not found anything. I don’t understand why this is happening.