Today I tried fishing for the first time and I noticed some UI bugs with how cooking them works.
Firstly, a cooked fish (admittedly only tested with fried fish, not baked fish) doesn't have a "dropdown" ui element when you hover over the name. The first image (A) in this post shows me hovering over a cooked tomato soup to show the "dropdown" I'm talking about, and the second image (B) is me hovering over a cooked fish without the dropdown appearing. You cannot see my cursor, but you can see my mouse is hovering over it due to the favourite/star icon appearing.
Secondly, the hunger saturation for a cooked fish (fried and baked) reports as 105% hunger saturation in the stove, which you can see in the third image (C), whereas the actual hunger saturation for a cooked fish is 45%, as you can see in the fourth image (D). I fried a few fish, they all give 45% hunger saturation. I have not tested with baked fish yet, but will do shortly.