When I use exposure slider the whole image becomes black while sliding

When I use exposure slider the whole image becomes black while sliding. So the slider works, if I move it to the left image is less exposed, if I move it to the right it’s more exposed. But WHILE sliding I cannot see real-time changes as the whole image turns fully black. I am professional photographer so I use lightroom every day, I tried to reopen, restart etc. but nothing helped. I noticed the problem 2-3 days ago and it’s pretty annoying. It doesn’t happen with other sliders though, just exposure.