Tridents seem to appear smaller than they used to and higher up when held (although I am not entire sure about that). However, the main problem is that when you do the punching animation, the trident slides down in an odd looking way, then teleports back to its normal position. I just updated the iPad I was using to 14.4.2 today, and the problem with tridents occurred both before and after the update.
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We're tracking this issue in MCPE-119702, so this ticket is being resolved and linked as a duplicate.
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