Ok, so at least we have things working. We can make sure to fix the peeking error for the v1.6.1 patch. Last thing from you: could you open the console (F8) and then attempt to peek at another party members hand? Do any error messages or warnings pop up when you do?
I am pretty unfamiliar with this menu to preface, but I see a message in red saying: make sure MYTH_StateinfoPopup is placed above MYTH_cgc_Helpboxcontrol. Below that are a handful of yellow section that talk about members of the party not having enough cards