I’ve been having the same problem! I’m also using Mull with uBlock Origin and Dark Reader installed. Clearing the cache may be unnecessary though – I’ve only had to force stop it to get it working again. I’m going to try turning off Dark Reader for a while to see if it’s been causing this incredibly annoying issue (my eyes will hate me for this though).
I’ve been having the same problem! I’m also using Mull with uBlock Origin and Dark Reader installed. Clearing the cache may be unnecessary though – I’ve only had to force stop it to get it working again. I’m going to try turning off Dark Reader for a while to see if it’s been causing this incredibly annoying issue (my eyes will hate me for this though).