I noticed this starting recently, When I reinstated my sub after a month or two without it. Immediately, when my GMs and I tried using dynamic lighting, things seemed to not be working properly. When I was scrolled directly over a light source, I would see no light emitting from said source; scrolling down below it, however, would give me a strange increase in the lighting, but in a blocky area rather than it being a smooth fade. Just today, I tried turning it on in another game, and found that the lighting wasn't wrking entirely; no matter what I try, I can't seem to see any emitted light from the token I've set up as a source. I've made sure the appropriate token has sight, made sure the source is marked as visible to all players, etc. The maps just look dimmed through the GM opacity function, with no actual light appearing. Other players don't seem to have this problem, in both games.