Getting weird issues with blockland probably an addon

[MonkeyFunkyMonkey]

Sometimes I dont know what triggers it but I will get stuck in chat and pressing enter will glitch out my screen also when alt tabbing out of bl then back in I have this issue which can be seen in the video below
https://vid.me/jJG1

[Ad Bot]

[Darth C3P0]

Copy a message (example g) while you are tabbed out and past it in-game the delete that pasted message and then type normally and see if it worked