I see, no, I hadn’t intentionally hovered over it. The “bounce” text hadn’t showed up while I was trying to click it either.
I had looked at the user’s address and there wasn’t a bounce count (arguably because they chose to start accepting the emails.
I think I was thinking it was a tool to let me resend a message, and since the bounce count had been reset, I wasn’t getting “bounce” from the resend icon. Odd that the hover text never showed.