Open more then 1 project on Mac OS

Hi, I’m just started to learn unreal.
well… I’m pretty sure my question sounds so stupid :c
my OS is Mac, tried to open more then 1 project but always not works.

for example opened “A” project and load “B” project while A is still running.
but no action on Mac.

tried to load those on Windows, it worked tho…

does it need specific process to open it or just not support on Mac?

thanks for spending ur time!! :smiley: