I have followedyour instructions but to no avail.
My Recent Apps are are still lined horizontally.
In fact, the problem is widespread :
https://android.gadgethacks.com/how-to/bring-back-vertical-recent-apps-menu-your-galaxy-android-pie-...
2nd problem :
On access to Samsung Members, I have Polish, Czech Hungarian and Portuguese but no English. Any solution?
Most thankfull to you.
Rashid Terki