(first time reporting a bug sorry if it is a little confusing)
I noticed when you use an elytra and you try to jump and use a firework to propel yourself, if your character hits the ground before actually using the full duration of the boost from the rocket. it is "stored" until you use the elytra again.
Thank you for your report!
We're tracking this issue in MC-111602, so this ticket is being resolved and linked 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.
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