Patch 7.24 has unmentioned (and awesome) QoL-buffs for MacOS
I didn't see this in the patch notes, but there are really good QoL buffs for MacOS, specifically in regards to how League handles video settings now.
PRE 7.24 - In Fulscreen mode, when you have 2+ monitors, if the secondary monitor was on a fullscreen app (e.g. Safari) while the main monitor loads the game (not client), the secondary monitor would force-switch to the desktop space, making it so you had to alt-tab League, swipe back to your fullscreen app, and alt-tab back into League. POST 7.24 - Now when you load into League, it just loads League. Nothing else switches or does weird stuff.
PRE 7.24 - If you were running on a lower-than-native resolution on Mac and tried to run Borderless, it wouldn't stretch to the whole screen. It would cut-off at the edges so you have your desktop in the background. You right-click create a lot of empty folders like this while playing. POST 7.24 - BORDERLESS STRETCHES FULLSCREEN NOW! Literally haven't had this behavior since like Midseason. No more delayed alt-tabbing from the fullscreen version.
Whichever Rioters got this fixed out, thanks for the early Christmas present, this fixes my constant gripe with playing on MacOS these past couple months.