You know how you can load a crossbow and then keep it loaded in the inventory? And how it shows that it is loaded in the hotbar? Well when it appears loaded in the hotbar it actually isn't loaded. (I attached a picture in case you can't understand my description, I am not the best at writing)
Thank you for your report!
We're actually already tracking this issue at MCPE-53545, so I will resolve and link this ticket as a duplicate.
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