On OS X, text entered into the message box just disappears, after a short time. It occurs at exactly 30 second intervals. The text entry field will then display "Type a message...". This is incredibly frustrating. It makes the OS X application nearly unusable. My OS version is 10.11.5 (15F34). Message+.app is version 2.0.1. I believe this started happening a while after the last January Messages+ update. It may have coincided with the 10.11.4 OS update, but I am not sure. I think the most important pieces of information are:
- 30 second intervals
- From application start, changing conversations has no effect on timing
- Only happens in a conversation
- Does not happen in a new message without a recipient