In the attribute table, clicking the ellipses and selecting 'Export to CSV', nothing happens. No download is started and no matter how many times it is clicked, a download does not occur.
Is this a bug? Other instant apps allow you to download a .csv file, however, I believe the 'Export to CSV' function in Sidebar instant app is broken.
Using Enterprise Portal for ArcGIS 11.5.0 (Build 56755).