This is the exact same problem I have. When I've two apps in split screen mode, I can't quickly go to the home screen to select another app without the top splitted app being removed (since the split screen functionality now sees 2 apps as one). This is very annoying because now I basically have to add all of my apps to edge panel and select them from there.
Please Samsung, just revert the split screen functionality like how it was in OneUI 2.0...
Yes, I agree, this recent update removed the ability to open split screen for apps. Thus, it ruined the ability to use an app I purchased that requires using split screen.
I cannot understand the rationale for removing something as helpful as the split screen. Did something replace it that is more useful because I haven't discovered it yet, if so.