Many of the remaining limitations of iPadOS are well documented. There’s no user account system for multiple users. We don’t have true extended monitor support. Multitasking has its rough edges. File management isn’t as powerful as many would like it to be. There are others, as well. Apple has been addressing such things, but it’s a slow process that wears on many fans of the platform.
A few days ago, we learned of another limitation that’s been hidden in the background, but is definitely holding the iPad Pro hardware back from reaching its true potential.