Missing Table Tool in Notes app on iOS 11

I have a Notes app issue on my iPad 2017 running iOS 11. The toolbar that contains the table button is not displayed and the "+" button that makes that toolbar visible above the keyboard is nowhere to be found.

I don't have the issue on an iPhone 6 or iPhone 7. Upgrading to iOS 11.0.1 or 11.0.2 did not remedy the issue. Third party keyboards were not configured (and now I have even deleted them from the device). If I produce a table on another device I can edit it on the device with the issue, but there is no apparent way to display the toolbar that contains the table button and, therefore, no way to add a new table to a note on the device with the issue. I do have the little "+" button that brings up the "Scan Documents" function (thanks Apple for multiple "+" buttons in the same app that do different things...)