Affects Version/s: 19.2, 20.0
Go to the the following tools
The open the Network tab in dev tools
optionally filter to only show js files
and verify that all js files have the following on the end "?version=abcdefg"
the actual version string doesn't matter as long as its there and not empty
Add portal cdn version to roster.js, gradebook-gbgrade-table.js, profile.js and any others taht need it. Need to bust the cache on script updates.