This have been happening to me for the past 2 hours. I was using the version 3.3.1 not sure the other numbers... I only got to know about this because my friend told me that he is having an issue with malwarebyte eating all of its RAM on 2 computers. On his laptop screen went black and it's kind of like dead. I didn't noticed it myself because I didn't checked straight away, but then my chrome become laggy and I went to task manager and it was like at 3gb but in 2 mins went from 3gb to 3.5 gb ram usage and kept growing.
I just closed it with task manager and it doesn't seem to be popping