Troubles with Wavebox

The issues seem to be:
1. Input fields for credentials are not recognized and the 1Password icon does not appear
2. Autofill does not work
3. Suggested passwords will not be entered, though the mini-dialog is shown with the new password
4. Trying to save the new account results in the 'unable to save' error

Using the password generator will also fail - but I don't clearly remember the exact wording of the error message.
I don't use the password generator much.

Do you have any additional diagnostic steps I can take when the error state is encountered?
It seems to persist until I restart Wavebox.