We have a Browser Document management System -you can search for 'cases'' and see a list of matching 'folders' for the cases. Clicking on a case produces a document list - mainly PDFs it displays PDFs inside a LEAD Tools viewer.
Up to version 101.xxx the back button from the viewer returned to the document list.
from version 102.xxx you return to the list of cases. The forward button gets back to the document list.
It seems like the Edge Back button in this case is skipping a page.
I have rolled a test PC back and forth between Edge 101.0.1210.53 and 102.0.1245.33 and totally confident that this is caused by the different versions of Edge - everything else remains the same - but obviously a rare use case as PDFs opening inside Edge are OK - it is just when we use the LEAD Tools viewer, so some sort of clash going on.
The Viewer is in a frameset - running that page outside a frameset page works fine, so it is something in how the "back" button deals with frameset pages is at fault (And yes, IMHO using framsets is the main issue, but this is a bought in package, so I can't change it)
