I'm undergoing some culture shock in this area.
My old band (now on long term hiatus after two members left) used to practice regularly and it was expected to turn up having only semi-learned the song. We'd fix the rest in practice room, sometimes could take a while. It didn't help that 3 of us sang both lead and backing vocals and with two guitars we never knew in advance who would do which vocal part or guitar part. That was worked out in the practice room.
My new band which I joined just before lockdown and is now re-activating have only occasional rehearsals. We had one 4 hour rehearsal before lockdown at the end of which the BL said "see you at the first gig"! ( but there were no gigs due to covid) Big change for me. So we all learn our stuff at home and polish up in a single session. It helps that its one vocalist (me), one guitar (BL), one bass and one drums.
Both bands are punk and new wave covers.