I found that, when entering the editors, the map resets itself and, furthermore, resets the map for the game being currently played as well.
An example of this bug (using Super Mario Remix):

@zep can you please fix this or make this a setting or something? (I would prefer it being a setting available using config)

I don’t think that’s a bug.

Interesting use case, which led to me finally figuring out the purpose of 0x5f37! If you add poke(0x5f37,1) at the top of your code, then PICO-8 won't reload cart rom into base ram after viewing graphics data in the editors. It will still reload when you run the cart the first time or load a new cart, but this should be exactly what you're looking for to resume without a map reset.

I updated the wiki with this info as well. It was actually in the manual, just wasn't sure how to demonstrate the difference until now. https://pico-8.fandom.com/wiki/Memory

Thanks for the info! It's really helpful!

I thought this was a bug too! My map checkpoints reset after resuming from the editor. Thanks for digging up the Poke() solution.