If you throw drop or shoot something while swimming with the swimming animation or gliding the entity spawns above you.
How to reproduce:
Swim in water with the swimming animation or fly with an elytra
Drop an item or throw a snowball, an egg etc. or shoot an arrow with a bow or crossbow
You will notice, that the entity spawns above you and not at the height of the camera like it should.
Related issues
Attachments
Comments

Thank you for your report!
We're actually already tracking this issue at MCPE-45570, so we 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.
Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki