Unable to add new exceptions

[Conz]

After having removed an old site from the allowed list and then re-adding it a while later, I can no longer add sites to the allowed list.
Unsure if this is due to an update of the addon.

In the debug window, new sites get added as "§:site.com" while old sites are just "site.com"
When adding a site, it'll become active in the addon but the site does not refresh, when re-opening the addon the site is at default again.