So since the 1.3 update I have trouble with PDF files. I open a lot of them throughout the day and the issue I have is if I have one open and linked to a group of other tabs or even if they are the only items open. When I open a second one the 2nd PDF shows the tab as linked but cannot show the image of the window contents. The if i close either (with the tab "x" or within the 1st file it locks the 2nd PDF and I have to right click the toolbar and close the PDF.
I have the very same issue on 2 separate PCs (work and home).
Also I have excel, windows explorer, Firefox, all open and linked in groupy with no issue. Multiple excel and windows explorer at same time do not show similar limitations.
This worked fine just before 1.3 update.