I've a problem with TScrollBox not showing scroll bars on OS X, works fine on Windows.
Tried running Samples\Object Pascal\Multi-Device Samples\User Interface\ControlsDesktop\ControlsDemo and get same problem. You may want to modify random position generation on line 353-354 of ctrlsdemofrm.pas to have smaller values, I set them to be 800 and 400.
I'm using RAD Studio 10 Seattle (Recharge)
Anyone else have this problem?