If you stand on a big dripleaf activated by redstone, it's not tilting but the tilting sound is played.
This sound is also played when the dripleaf is powered by redstone initially (see MC-214858).
Linked issues
is duplicated by 9
MC-214805
Dripleaft constantly plays "dripleaf tilts up" when powered by redstone and stood on
Resolved
MC-214903
the sound of the dripleafs locked in a loop
Resolved
MC-214984
Dripleafs keep crunching when powered.
Resolved
MC-215046
Standing on redstone-powered dripleaf plays tilting sound endlessly.
Resolved
MC-215104
It makes a weird sound when you are on a powered dripleaf plant
Resolved
4 more links
Can confirm.