Every control works from its first frame. Motion never gates a tap. Under Reduce Motion the whole entrance is one 120 ms cross-fade; the hop and the breath are dropped; the haptic stays.

New to Growing shown. Growing to Familiar: the ring fades out and the underline settles to a hairline in the same 520 ms.
Both start on the same frame and retarget together. Closing the pane runs the reverse and restores the sheet to its earlier detent.