I noticed that after about stage 9/10 (can't pinpoint precisely when it started happening) that chests stopped spawning in the upper half of caves. They still spawn in the lower half of caves.

That is very strange. I am only seeing 1 node as active atm for that section.

If you'd like, you can exit the zone and wait for a full respawn after 24 hours. Alternatively, you can exit the zone and then ping me here and I will just manually reset your timer so you can then go back in and skip the 24 hour wait period.

I'll try clearing Demora (if I can manage it) and see if opening the chest behind her helps, if not I'll try a reset.

That shouldn't spawn any others with exception to at most 1 to replace that one being opened.

Lost Grove has been exited if you wouldn't mind resetting then, thank you.

You should be good to re-enter.

Well, the reset spawned a round and a half of chests...but I haven't had any spawn back since.