Travel through a Immersive Portal supported Portal
See the result on the map (in attachment)
(4. The glitched stuff also randomly (partly) disappears on the map or/and some darkened spots appear)
| Cave Mapping / "Show Caves" is disabled
(I got about 90 Mods loaded but travelling between worlds that support Immersive Portals causes this)
It also seems like this is not always appearing, just randomly
New Example with more detailed and only JM and ImmP:
Install JM and ImmP newest Version
Build for this example a Nether Portal and activate it
Go through it (and maybe look shortly in not a too long distance around)
Go back through the portal (if it's important through the side you came out)
See the result on the Map (my try in attachment)
(this time not such an extreme result but you can see what I mean I hope)
Answer from JM Dev:
Looking at what is happening, it does not seem to be on jourenymap side of things. Immersive Portals is doing something that is messing up how we read the chunks. I have not isolated it yet.
Immersive portals seems kind of buggy in general.
Well, I know this isn't supported and you won't fix it, but here is a copy of all stuff from JourneyMap issues:
JourneyMap Version: 5.7.3
Forge Version: 36.1.65
Minecraft Version: 1.16.5
Describe the problem in repeatable steps:
New Example with more detailed and only JM and ImmP:
Answer from JM Dev: