iPad Pro Quick buttons secret functions?

[Benliou]

Today I noticed some hidden functions in the iPad Pro version floating buttons.

If I select the Move tool (the Cursor Arrow with Cross) and hold my Eyedropper quick button while tapping on the screen with my Apple Pencil, it duplicates the layer I am working on. Is this a glitch? Are there more secret functions? Is there instruction manual for this somewhere?

[support]

Hm, eyedropper usually bind at the ALT key at PC version. Also as in photoshop you can hold alt and move layer to get copy, that's why you get this effect.