Steps to reproduce:
- Add Dashboard problem widget and save changes.
- Now, switch to Dashboard edit mode and open widget 'configuration' window.
- Add host groups, excluded groups and hosts as much as possible to make window content scrollable.
- now, scroll till the bottom and try to add some tag.
although I clicked on 'Add' button, actually the checkbox of severity was selected. This doesn't occurred always, but I was able to reproduce it several times. See attachment.