There are two places where the interface can be collapsed into wide button that then also can be used to unfold again. The button also includes previews on what's folded in from the search fields represented by pills. The pills even can be focused with the keyboard to remove them and change the search results.
There are several issues here that could be addressed:
- When a collapsed pane is focused everything on there is written out as a long connected text. There's no more context given on the different elements on there. Or even a distinction.
- You can tab though the list of pills but again the context is not quite clear, especially that you can remove them.
Current improvements:
- Make the Advanced search: label semantically more explicit https://gerrit.wikimedia.org/r/c/954603
- Convert the "list" of search term tags into a real html list https://gerrit.wikimedia.org/r/c/954710
- Add a descriptive title to the list that can be read by a screen reader Currently used search terms https://gerrit.wikimedia.org/r/c/954710
- Add a colon between the search term's label and the content so it's not just read like a group of words ( that's even part of the original mock ) https://gerrit.wikimedia.org/r/c/954696
- Disable the interaction with the default search order tag, because there's no interaction possible https://gerrit.wikimedia.org/r/c/954683