Game Crash Related to Abyss

THIS HAPPENS ALL THE TIME

Enter abyss in a map ->
Complete abyss and click return to map ladder button ->
Portal to my hideout to drop stuff off ->
Enter map again

FATAL ERROR IN
Metadata/Monsters/PorcupineAnt/PorcupineAntLarge@36: Number of shared states is different on client and server! Delta: 11

This full crashes my client and when I reload and choose the same character, it happens again immediately.

This continues to happen until 15 minutes have passed and it closes my map, causing me to lose the map, any buffs I had to run an annoying tower for, anything left on the ground, etc.

Please. PLEASE. Please. Fix this