Okay, so I entered the Nether 3 days ago, and noticed that the world literally disappears after a few seconds, up to a minute. This was originally on my locally hosted server (to avoid world corruptions and the such if I were to crash). Upon entering the Nether the world would load normally, but then after a little bit, the entire world would disappear. Entities are still there, they just slowly fall as if in Biomes O' Plenty quicksand. I can't move when this happens either, it's as if the client hasn't loaded the chunks but the server has, or like the edge of an anvil where the collision box on the server is a different shape/size than the client one. Here's a screenshot of what the Nether looks like.
After 2 days of removing and or updating mods, the problem persists. I gave in for a short time and played normally, I found the End Portal, the End loads correctly, then disappears like the Nether. Again, entities are still loaded - Endermen were falling slowly, and those Crystal things the dragon heals from where floating in place happily, note that I could not damage them.
I HAVE NO IDEA WHAT IS GOING ON HERE.
Points of interest:
- Twilight Forest 'Naga' part entities are 'ticking entities' in the Nether for some reason
- Not moving in these dimensions postpones the problem (not indefinitely)
- Different Seeds does not make any difference
- BoP worldgen or not makes no difference
- Twilight Forest and Mystcraft ages work fine (Haven't tried RF Tools worlds, Deep Dark, Bedrock Portal, others)
Flaxbeard'sSteamPower-1.7.10-0.28.0 is the cause. After removing it the Nether and End don't vanish, turns out it was breaking the portals and taking me a somewhere in the OVERWORLD, overwriting the overworld with nether. I have no idea what that means but it's discussed here: https://github.com/Flaxbeard/Flaxbeards-Steam-Power/issues/224
Project Red was NOT the cause, the problem just didn't seem to occur when I removed that mod, a rare case where Steam Power actually worked as intended, instead of breaking dimensions.
In the logs it does say 'loading dimension 0' and I have had some crashes when loading the Nether, but I didn't think they were related, and I was working on fixing this issue first.