The grabber is still working with Ignition after the update for me. Please try restarting both Ignition and PT4, and if you still have problems after that enable logging (Configure > Options) and restart PT4. Play a few hands and when you sit out go to File > Open User Data Folder and open the Logs folder in the window that opens.
Compress the files in that folder (not the Archive folder, just the files) and attach them to a
Support Ticket so that we can see what is going on.
Tutorial: Reporting a problem