To reproduce:
- Edit a page in the Hebrew Wikipedia in visual editor.
- Add a table.
- Single-click a cell in the middle of the table, and make it focused, but not editable.
- Press tab.
- As expected, the focus moves one cell forward, to the left (because we are in a right-to-left wiki).
- Now double-click the same cell.
- Press tab.
Expected: The focus must move to the left.
Observed: The focus moves to the right.
The same for Shift-Tab: It should move back (to the right), but it moves forward.