It’s not even a bug but a visual disturbance. I have a time helper and if I edit it in the lovelace dialog it shows up like this:
The Lovelace view is shown nicely.
Steps to reproduce:
- Set a time helper to 6:15 in a lovelace card, all is formatted nicely
- Change the time helper to 6:00, all is formatted well
- open the change dialog again, the time is formatted as 6:0.