Lightroom sliders causing image to black out

[Trevor27593757yg2b]

I have just noticed this starting today: when editing an image in LIghtroom Classic (as I do daily), if I try to adjust the Dehaze slider, the entire image blacks out on the screen. Any ideas or insight as to what may be causing this? I have updated to Lightroom Classic 12.1 hoping that this would fix the bug but no luck..

[TheDigitalDog]

Try disabling GPU in preferences, any difference?

I can't clearly see the screen capture; it looks like there is also some metadata conflict in the thumbnail view.