Wokflow when using the keyboard to add a statement:
- With mouse, navigate to the “ Search to add items ” search box
- Type in something − get autocompletion
- With ↓, select the correct item
- With Enter, validate
- Publish changes:
- Enter does not save
- Tab goes to the Qitem just added
- second tab goes to “Mark as prominent”
- third Tab goes to the delete bin
- fourth tab goes to « Learn more
- fifth tab goes back to the top of the page, to the ULS
To navigate to « Publish changes » one needs to Shift-tab.
I think a more natural tab order, like when adding statement to Wikidata, would help.