Steps to reproduce:
1. Open Bank
2. Deposit an item [Ctrl+click] from inventory
3. Click the sort button
Right there it freezes and is unable to unfreeze w/o crashing the client. [It writes the same error over and over again to log.txt file at an extremely fast pace.]
Here is a pastebin link to the errors:
It is just the same error over and over again.
Running Windows 8.1, Java version: 1.8u20