1) open a query
2) click on modify
3) edit some attributes
4) now click on refresh without saving it or canceling changes first
What happens is kind of unexpected. The query returns tasks according to the selected fields in the query form but both in the Task Dashboard and in the query table. Since i assume they are meant to be temporary tasks, the query should not be refreshed in the Task Dashboard. Moreover with mylyn under the hood the new parameters are silently saved in the mylyn tasklist but not in NB bugzilla config, so we get inconsistent query setup.
I suggest either remove the refresh button from the edit mode or let it throw a confirmation dialog either to cancel or save changes prior to the actual refresh.
I had to fix the inconsistence: see core-main #031e8fd71a41 - when this is resolved i guess this WA can be removed.