SMS with Android 5.0 Lollipop

When I send a message the send is not confirmed ie the sms icon animation just continues indefinitely, with no "message sent" confirmation. I think the message has been sent, but I can't be sure. Only noticed this with the other day's Android 5.0 Lollipop upgrade. Any thoughts?

Hi,
Thanks for your feedback and sorry for any inconvenience this may have caused.

I've forwarded this to the developers. They'll look into this and will try to make improvements in future updates.