Because Jagex just implemented something a few days ago that detects this. Either way, that has been resolved by not allowing you to launch RuneLite through RuneMate.
I just asked the client-developer and he just confirmed that he is looking at the Mac issue tonight. :)
This was removed because if you launch RuneLite through RuneMate, you'd get an instant ban of 14 days.
Not sure why RuneMate is not detecting RuneLite anymore (probably related to Mac). Might be worth jumping into the Discord and create a new help thread.
Prime Barrows updated to v2.23.0.
* Fixed super restores not being used to restore prayer points.
* Fixed bot not using stamina enhancers in the crypts and when traversing between tombs.
* Added a `Prayer Efficiency Mode`. When enabled, the bot will restore prayer in between brother kills if a...