Despite banner patterns not being items, one would anticipate that hovering over them would display their respective names. However, this functionality is currently absent.
steps to reproduce
Place a loom
Obtain a banner and a dye
Right-click on the loom and place the items into the corresponding slots
Hover over the patterns
Observed: Tooltips fail to appear.
Expected: Tooltips should be displayed.
Note: This problem prolongs the process of identifying a banner pattern, as you must select the pattern and then hover over the banner in the output slot to reveal its name.
Can confirm. I would like to request ownership of this issue, due to an inactive owner.