When jumping off a 1 block high while wearing elytra, the player model will twitch strangely

Would MC-166336 describe your issue?

I think the descriptions are not the same thing. I described it very clearly, and the onedrive link I shared recorded a video of reproducing the bug.

I have already watched the video, however; I still believe the report does not adequately describe the observed issue.

After watching the video myself, what occurs to be happening is that you are activating your elytra as you fall, you run up against the block in front of you, and your model is tilted to the side (this is what I think is the 'weird twitching').

This is the same behavior described in MC-166336:

yeah, your description might be more accurate, it's good that you can understand what happened

In that case, this report will be resolved as a duplicate of MC-166336 seeing as you agree about the description.