I composed a text, plain text, no attachments, no frills; in an ongoing thread.
When I tried to send it, the balloon turned gray, the word "Failed" with a lock above it appeared at the bottom left outside of the balloon where "pending" or the time sent usually appear.
A red exclamation point in a circle appears vertically centered to the right of the gray balloon. If I click on the red exclamation point, the gray balloon moves to the bottom of all of the balloons (where the most recent sent/received balloon sits).
I can't enter the balloon.
I've no idea why this text is (mis)behaving. Can anyone please enlighten me?