•  "Create a Table" tool works only by pressing Alt + Down Arrow and expands a popup. I suggest expanding the popup on Space or Enter as well. Thus the current Alt + Down Arrow behavior could work as well.

•  It is not possible to focus through keyboard the "Table Wizard" tool inside "Create a Table" popup:
  

Reproduction of the problem

1. Go to https://demos.telerik.com/kendo-ui/editor/index
2. Focus Editor
3. Press F10 to focus toolbar
4. Press Tab key until "Create a Table" tool is focused
5. Press Space/Enter to activate it - nothing happens.
6. Press Alt + Down Arrow to expand the popup
7. Press Down Arrow to select table size

Current behavior

It is not possible to select the Table Wizard tool neither through arrow keys nor through Tab

Expected/desired behavior

When the bottom table size cell is reached, pressing Down Arrow once again moves the focus to the Table Wizard tool.
When Table Wizard tool is focused, pressing Up Arrow moves the focus to the bottom table size cell.