Is anybody seeing the "blank context menu issue" in the spreadsheet? The menu contains 4 items (Cut, Copy, Paste and Merge) but they are not visible unless you hover over them
And the Cut, Copy and Paste commands don't work anyway, they cause a "do not use this function" message. See http://screencast.com/t/lsHfeO8FT
This is happening with the Q3 2016 release in Chrome, Edge and IE 11.