I am running ArcMap for Desktop and ArcGIS Pro both at the same time. As I update or change data in a geodatabase while using ArcMap, these data do not properly update in Pro (even if they aren't currently part of a map in Pro). Its as if Pro sees the files and folders as frozen in time (when Pro was launched), and doesn't update them in real time.
I modify the attributes/fields of a feature class in ArcMap (even if it is not loaded in the Pro map, which if it was I would probably get a schema lock). If I then add that data to Pro it adds the old dataset as it was when Pro was originally launched - without the updated attributes I edited in ArcMap! There is no apparent way to refresh the folder or data in Pro, so it will update correctly. Its as if Pro isnt getting live updates to folders and files and doesn't recognize when those files are moved and modified outside of Pro.
Iif I add or delete feature classes within a GDB outside of ArcGIS Pro, and try to add them - Pro still sees the old FC's even if they are gone. Trying to add them gives error "Failed to add data, unsupported type" obviously, the file isn't there anymore.
The only work around is to close out of Pro and reopen (pretty big inconvenience if you are working with both software simultaneously - ie: Business Analyst in ArcMap and symbology/cartographic work in Pro)
Bug or working as intended?
PS: I should mention that you can, however, see new feature classes that were created. it's the deleted FC's that are still showing within the GDB, and current ones that were modified are not having those modifications update correctly.