This has been happening on Windows 10 the entire time I’ve been playing this game. It seems that when you lose your connection (Hearthstone shows the WiFi symbol and prompts you to hit “Reconnect,”) the “Enter” keybind for responding to the last chat no longer functions. This requires restarting the client to fix.
I’m sick of restarting the client 5 times a day because I have to go AFK sometimes. I’ve seen topics over a year and a half old on this problem that are met with silence. Is there really no support for this issue?