In Inbox, when the extension is active, messages that are threaded cannot be opened, and replies cannot be initiated by typing in the reply field. Also, Once a reply is started by using the reply arrow, the send button will remain grey and unusable until the reply is made expanded.
Firefox 56.0.1 (64-bit and 32-bit). Repeatable.
In Inbox, when the extension is active, messages that are threaded cannot be opened, and replies cannot be initiated by typing in the reply field. Also, Once a reply is started by using the reply arrow, the send button will remain grey and unusable until the reply is made expanded.