This is much needed and I don't know the simple reason why this isn't possible on Bedrock.
I know parity isn't a bug, but I thought it was worth mentioning.
MCPE-80681
Can't glide or open Elytra while in water (parity)
Resolved
Duplicate
1
(Unassigned)
Unconfirmed
Multiple
Android 9
1.16.0.63 Beta, 1.14.60 Hotfix
Retrieved
Thank you for your report!
We're actually already tracking this issue at MCPE-24464, so I will resolve and link this ticket as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
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