When jumping or falling in versions prior to 1.14, the camera would do a sort of "bounce" to simulate the player leaping up and then falling down as well as moving the held item down and then back up again. This also applied to falling as a whole, and the camera would slowly move forward and stop at a certain angle. In the release version of 1.14 and all updates following it, this feature doesn't seem to be present anymore.
This is likely to be related to MC-159952, as it also only appears in versions after 1.14 and 1.14 itself, and is also an issue pertaining to the player's camera.
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Out of curiosity, could the bug I mentioned (MC-159952) be caused by this bug reportedly being patched? Now that I think about it, the visual movement of both the camera and the player's hand in that bug look very similar to how they do in 1.13.2 and below when falling.
That might be possible. I've linked the two as related.

Another quick question-- and I apologize for bothering you so much-- but regarding your comment on MC-162137, were you referring to the fact that the player's arm moving up when falling was a bug that was fixed, or were you referring to the fact that the player's arm NOT moving up when falling was a bug that was fixed? If you were referring to the first question, could I ask why it was removed? I really liked this feature and would love to see this return even if it's just as a togglable video option, so I'd like to know why it was removed if it doing so was intentional. However, if you were referring to the second question, I did some testing and it doesn't seem to appear to work in any version between the version it stopped working (1.14) and the most recent snapshot, 20w46a.
I was speculating that the arm moving up was probably considered a bug that got fixed. I don't have any more information on this.

Ah. Thanks for the response anyway, I really appreciate your help.
Thank you for your report!
We're tracking this issue in MC-162137, 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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