Version 7.5.4.2

This is an addition to my post yesterday about the left and right columns disappearing. It seems it wasn't just my setup but other people had the same thing happen.
Disappeared one minute, partially came back after 15 minutes and then fully back a time after that.
Has this happened to anyone else?
Thanks.

Tee,

I am using 7.5.4.2 and have not had any problems with my side boxes that I have noticed. I have been running this version for a few weeks now.