I uploaded a release-candidate version that should be able to fix the flickering issue.
(It’s fine to use this in production, but there’s a possibility I may revise the added feature in a way that requires manual adjustment.)
If you turn on the new “Prevent Battle Flickers?” parameter, this should now prevent screen flickers and flashes. It’s off by default because there could in theory be unintended side-effects.
One caveat that I noticed is that the Actor stance seems to revert to the idle pose while the menu is open (when doing so from a turn-based Troop Page). I’m not sure if that’s intended behaviour that always happens when a blocking Page runs, or if there’s still an unresolved glitch.