M1 only supports 1 extra monitor. (M1 pro does support two, but only through an expensive thunderbolt dock or through two cables from different USB/TB ports.
No volume adjustment of external monitors if they are not from Apple.
There are maybe many more (maybe no window snapping like windows if you count that), but those are the issues that I noticed.
There are maybe many more (maybe no window snapping like windows if you count that), but those are the issues that I noticed.