Elytra Bug

[Boxpvpv]

Issue:

There seems to be some sort of a bug with NoCheatPlus where players can't use fireworks when they are in cobwebs.
The player's crosshair is not inside of the cobweb but they are unable to use fireworks.

Here is a video showing the bug occurring again with only NoCheatPlus on the server, apparently when the player is on top of the cobweb and when they double-tapped the space bar and try to use a firework, they get pushed upwards.
In the later part of the video where I disabled NoCheatPlus the bug does not occur anymore.

Video Link:

https://medal.tv/games/minecraft/clips/11YFKirZ3Kdnjm/d13379vqQUk1?invite=cr-MSx1VTMsNDM4MTQ3MjIs

There weren't any checks being triggered and I have tried disabling movement checks and re-testing the bug but the bug still occurs.

Version Used: NoCheatPlus Build #155

[Janmm14]

Please look #668