Whenever the overlayVillagerInfo renderer is enabled there is a memory leak. If I had to guess it scales with the amount of villagers in close proximity, however that is pure speculation and would need more testing to confirm. Disabling the renderer halts the memory leak.

using openjdk 21

modlist:
minihud 1.21.1-0.32.50
malilib 1.21.1-0.21.0
fabric api 0.105.0-1.21.1
modmenu 11.0.3