Modpack version
1.77

Issue
Been playing for a few days and now for some reason overtime I try to use any inventory other than modded inventories, it shoots my mouse to a random spot and throws the item. I can eat, and use modded interfaces like Mekanism's blocks and tinker's crafting table but I can't use any chests or regular crafting tables, or my regular inventory.

Logs
N/A

Please supply your latest.log :)

Everything got fixed when I reloaded game, sorry! But now my game is crashing as soon as I spawn in so I need to open another issue.

Feel free to upload the crash report to pastebin and link it here, it's probably just old java.