The new Samsung update f****d us basically, took everything away and replaced it with bulls**t. That's really all I can say about it, I wish there was an option to unupdate my phone because I'm so p****d.
I need my multi screen function on my phone. This update is so annoying. Fix this ASAP
It's still there, you tap the bottom left 3 lines, then tap on the top of an app you want to split screen with.
If you download good lock from the galaxy store it's a lot better too. More options.