I cannot see trident in my hand. I have the best version where you can select the expiremintial gameplay
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Comments 2

Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-31541.
Your additional information and observations are very useful, so if you can add them to the comments section of the parent issue it would be appreciated.
If you have not, you might like to make use of the search feature before making a new ticket, as it's likely that the issue has been reported already.
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It's a known issue. Should be fixed in the following update