I was playing on my redstone testing world when I noticed the following after igniting TNT:

Physics - such as sand, gravel and concrete powder falling down - not seem to be working. I also noticed that I couldn't switch levers from on to off, however they emitted particles when I right-clicked them. Buttons stayed pressed down I right-clicked those, and items could not be picked up (by hoppers, hopper minecarts and me).

I also noticed, in this glitched state, that chunks outside of my render distance would not load, even if I came close to them, and the edges of loaded chunks (the ones at the edge of my 16-chunk render distance) just dropped straight into the void. I tried using F3 + A to reload chunks, but it still didn't do anything.

Thanks and I hope this can be fixed

(I don't have pictures because the screenshots I am trying to upload say "Jira could not attach the file as there was a missing token. Please try attaching the file again.")