The keyboard shortcuts for layer blend modes are---intermittently---not working. I select a tool like the marquee tool and hit, for example, the T key (for the saturation blend mode). Sometimes it works and changes the layer blend mode; most of the time it does not work. I have been unable to correlate its working/not working with anything I'm doing.
I an on a 27" iMac running latest versions: PS (22.4.1) MacOS (11.3.1) .