Comment Boxes & Dropdown Arrows only appearing momentarily - Excel 2016

[cjcass]

Hi,
I have a file which used to work fine but now has a problem - the only difference is that I have upgraded from Excel 2010 to 2016 (which I guess must be the issue!?). The comment boxes and dropdown list arrows only appear momentarily (a quick flash on/off) with this particular file in 2016, however, the file continues to work fine in Excel 2010. Strangely though I have other files with dropdowns and comments boxes which work fine in Excel 2016 - so am guessing it's nothing to do with settings in Excel 2016...????
Any thoughts would be much appreciated.

 

[Roderick_E]

Hmm, it still sounds like a painting issue. On your add dropdown code you are first .delete validation. Is this because you have previous dropdown in that location? I wonder what affect commenting that out has.
Secondly, is the same cell selected at the complete end of your process as is initially selected? I'm wondering if there is a confusion of what cell is actually in focus?