Everytime a rain starts falling, game becomes unresponsible

When playing the attached world (newly created creative world, with some fireworks machine set up), once in a while the game becomes unresponsive.
Everytime I close it after such occurence and load the world again, rain is falling, but it wasn't before the hang, so probably rainfall is a factor.

Toggling the rain on using a command does not cause the bug.

Also attached manually triggered crash reports from two last hangs, in case they say something about the game state during the hang.