Accessing Teams Private Channels Files in SharePoint

Is there an issue currently with accessing Teams Private Channel files in SharePoint?  I have looked but cannot find anything.  

Recently our users that used to access Teams Private channel files within SharePoint  (by going to the sharepoint site and Documents and then In Channels) have noticed that when they click a folder it doesn't take them into a file list, it just does nothing.  If they then press F5 to refresh it will usually take them into the list of files.

Accessing the files with Teams is fine still, only an issue if you use SharePoint.

I've tried this on a few other sites within our Tennant and it happens on our other sites too.