Yep! I have four different stylus for the iPad. I can't get the Wacom Fineline, Creative, or Adobe stylus to connect. 53's Pencil works, but only in Paper. Tried these in Adobe apps, Sketchbook, OneNote, and Bamboo Paper.
VERY upset, given that there aren't any Apple Pencils to be had! Thought one of my old ones would hold me over until I can get an Apple Pencil, but nope. Seriously cripples more than half the functionally of why I bought it!