Disabling the elytra while flying does not work

Hi im back again yay!

Attempting to switch from gliding with the elytra to creative flight fails to disable the elytra resulting in weird slow motion gliding akin to gliding with slowfalling

 

Procedure,

Get an elytra and equip it

/gamemode c

Fly high in the air

Disable creative flight before activating elytra flight

Glide around a bit

Attempt to re-enable creative flight

Observe: weird behavior

Expected result: (do i need to explain or do we get it) normal creative flight

Observed result: (eldritch abomination of damnible flight) elytra doesnt get disabled properly