Hi,
1. Not as a drop-down, but as the autocomplete or keyword suggestions, you can select a taxonomy as the source.
3. Make sure that the results layout is the default “hover” and not “block”, here.
4. There is something wrong with the overflow setting on some parent element there, as it “cuts” off the bottom of that box. The actual size of that section is bigger then the visible area, and a “hidden” overfolw value will clip that (cut it at the end).
The only way to fix that is to correct the overflow values on the affected elements.
You can try this custom CSS to see if it makes any difference:
section {
overflow: visible !important;
}I still recommend finding the correct selector to apply this to.