After shooting a crossbow, the loaded crossbow icon is still shown in place of the unloaded one in the player’s hotbar.

I can confirm, also happened in the 1.14.0 ^^ (I have uploaded a better quality video)

Thank you for your report!
We're already tracking this issue at MCPE-53545, so I will resolve and link this ticket as a duplicate.

If you would like to add a vote and any extra information to the main ticket it would be appreciated. If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.

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