When pulling the bow it appears in the left side and inhibits player vision. After the shot has been taken it goes back into the right hand and looks as usual.
this issue happened before and got fixed. Reappeared recently when the first aquatic update features got implemented.
Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-31990.
Please add a vote and any new information to the main ticket, which will be updated accordingly.
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.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Feedback – 📖 Game Wiki