keyboard shortcuts stop working after a while

see title,

some keep working, but some not. like zooming out on the timeline keeps working, but zooming in doesn't. or in the color page, up and down for next/previous clips also stops working.

it's a little random, mostly after +-5/10 minutes, when i restart resolve it works properly again.

cant really figure out if i'm doing something wrong, it's just a little annoying.

it happened after i installed the newest version of resolve, on windows 10.

I saw some oddness as well with my first run of 15.2.1. Others reported similar. However, a restart of Resolve corrected the issue and it hasn't returned since. I don't know why it keeps coming back for you.

I can report the same problem. After some time, ctl++ doesn't work to zoom in the timeline. After a reboot, it's OK.