Topic category: Troubleshooting, bugs, and solutions
My custom dimension completely freezes the server in 2025.2 after updating from 2024.4. This never happened before. The game runs normally before entering the dimension, but 5 seconds after entering it the world just stops ticking, everything stops happening and no new events get processed. The client runs smoothly and lag free, but the server doesn't do anything. The console is silent, other than rarely saying "Can't keep up! Is the server overloaded? Running [number]ms or [number] ticks behind", but no information about what may be causing it. The game remains server-frozen after returning to the Overworld.
I also saw this absolutely broken terrain which was not supposed to be in there:
It's a dimension mod, if the dimension doesn't work I can't use this version. Any ideas on what may be causing this based on what changed from 2024.4 to 2025.1 and 2025.2?
Solved, the console spilled useful information. I had a procedure which deleted lava blocks and then chained into deleting neighbouring lava blocks. For some reason after updating it was deleting ALL blocks, not just lava, and naturally the game couldn't handle it.
I am cursed with struggling with issues for days and then immediately finding the solution after posting forums posts.