A lot of items you were able to fish in previous versions are no longer fishable. I discovered this when I was fishing and I noticed I was only getting a few different items. From what I can tell these items are missing from the loot table:

Name tag, lily pad, bowl, leather, rotten flesh, sticks, string, water bottle, bones, ink sac and tripwire hooks.

In the screenshot under you can see the drops I got from fishing for approx. 1 hour

Also I am using a fishing rod with lure 3, luck of the sea 3, mending, and unbreaking 3