When I opened Discover today not from panel widget indicator but from menu I had this button on upper panel telling me that there were no updates but when I used option check for updates it appeared that there were some updates. My suggestion is: when the program is opened, the button should show information "check for updates" and when clicked and repositories checked only then the information on button should change to "No updates" or "Update". This would make more sense to me. So I suggest one button changing its state and indicating the real state. After update is made the information should be as it is now that updated successfully but the button should come back to "Check for updates". Showing that there are no updates just because the program has not check it yet is not showing the real state.

An example of such situation:
https://bugsfiles.kde.org/attachment.cgi?id=99642

Reproducible: Always