I constantly use a second window for opened documents (Window > Arrange > New Window), after the recent update (25.11) the second window doesn't seem to update properly. Usually it updates after each brush stroke (with some little delay), currently it doesn't update unless I click on the second window, hit Undo or change some layer visibility (the first video). The second video is from 24.7.4, the second window updates properly.
PS version 25.11.0, Windows 10 Pro, AMD Ryzen 7, 64Gb, 2080S. Use Graphic Processor, Multithread Compositing, GPU compositing are on. Tried to turn them off to.