Why do sheet effects turn off?

Not quite the same question as HellenAA asked, but that thread made me think of this:
Why does the global "Activate Sheet Effects" checkbox become unchecked at random-seeming times? It not uncommon for me to work on a section of a map, then pan or zoom and notice oddities. I now go straight to the sheets window because I've seen this too many times. It also happens a lot on loading a map, even when it's a CC3 window that's already open with the box checked. It's not a huge problem, of course. I'm curious, though.
Answers
I have never noticed this. The only time sheet effects turn off for me is on Re-Start. (an option that can be toggled)
What version are you on? What operating system?
Does it happen with a specific map, specific map style?
This literally just happened to me (again) a minute ago, so I am curious about the answer, too. It's not a big deal to turn them back on, but I am curious about it.
I can't provide a full explanation here, especially since this isn't really something I have really noticed myself.
But let me address one thing at least:
It also happens a lot on loading a map, even when it's a CC3 window that's already open with the box checked.
All CC3+ maps have a setting that determine if effects are on or off on load, you'll find this in the Display Speed Settings
dialog. This is a per map setting. If this is off, the map is loaded with effects off, even if it was turned on inside CC3+ previously. You can override this behavior from Tools -> Options
Now, while you experience that effects randomly turns off, I don't know, but i suspect it could be due to loading a file that sets this value. There are lots of cases where CC3+ loads map files, for example, symbol catalogs are actually just map files with a different extension, and drawing tool previews in the symbol catalog window can also be map files. I am suspecting that maybe the value is incorrectly set when something like this is loaded.
Me: latest CC3+, Windows 11 Pro and Home on different computers, both amd_64.
All CC3+ maps have a setting that determine if effects are on or off on load, you'll find this in the Display Speed Settings dialog. <snip> Now, while you experience that effects randomly turns off, I don't know, but i suspect it could be due to loading a file that sets this value.
Oh! That makes sense. The last time this happened to me, I was in a map designed with the Asian Town annual, which defaults to having sheet effects turned off when first opened. I will try to pay attention to what style my map was designed with next time this happens.