Just wanted to add something here, mostly for people arriving here via Google searches.
I had the latest stable version of Little Snitch on my Mac with macOS High Sierra. After I installed macOS Mojave beta, LS broke. But I also experienced:
- Almost unresponsive system, probably caused by Little Snitch using 99% CPU. Killing LS wasn't possible because of agents restarting LS.
- 99% broken DNS resolving on system level (everything: browsers, other software, from Terminal, etc). I tried restarting mDNSResponder, changed DNS servers, re-registered mDNSResponder launch agents etc to no avail.
After uninstalling LS, all issues disappeared and macOS Mojave started to function properly. I didn't change anything else.
Not sure if there's a 100% causal relationship, but worth trying if you have issues with Little Snitch + Mojave...
Edit: Removed the rendering issue from the list above, as I experienced that again while LS is not installed anymore.
Last edited by Rutger
on Wed Jun 13, 2018 10:40 am, edited 1 time in total.