While it's nice to be able to access the whole log via the ingame menu now, it's really cumbersome just for getting compilation errors/warnings:
Former behavior: Compilation errors are diplayed on the main screen.
Current behavior: Nothing gets displayed. I don't know if effects got comiled. Must press Shift+F2 to acces ingame menu, click log, scroll all the way down the log to get compilation errors.
See what I mean?
My suggestion: Add a checkbox under the log tab "Display errors on main screen" (which is also settable in ReShade.ini). And it should be the default behavior again, since, imo, it's useful for everyone (common + power user) to know if something went wrong on compilation.