Rated 4 out of 5 stars

by Firefox user f0c65b on Sept. 21, 2017 ·

not compatible with multiprocess

This review is for a previous version of the add-on (0.2.2). 

by Infocatcher (Developer) on Sept. 21, 2017 ·

Should be compatible...
Please provide detailed bug report here:
https://github.com/Infocatcher/Private_Tab/issues
Also see https://github.com/Infocatcher/Private_Tab#troubleshooting