Steps to Reproduce
1. Catch Jellyfish in a Trawl Net. 2. With a full inventory, shift+click in an attempt to move them into your inventory. 3. Close the Trawl Net, then reopen it. 4. The Jellyfish you attempted to move will now display a percent, presumably for its hunger. Attempting to move it will crash your game.
This issue has been fixed in either a future version or updated in a previous version.