Some NoScript whitelists may become permanent
I have several Tor Browser profiles and I just noticed that on two of them there are some permanently whitelisted addresses.
https://localhost.megasyncloopback.mega.nz:6342 https://rogueleague.org:57333 https://webirc.oftc.net:8443
One profile had all of these while the other one had just mega.nz's. Seeing it one two separate profiles suggests it wasn't an isolated case. Each profile is a few months old and have been through several Tor Browser updates. Currently on 8.0a1 (win64)
I'm not sure how to reproduce these. Though I believe it happened after temporarily enabling javascript on these websites. The first one probably requires downloading a file through mega.nz.