### **Environment**:

Your OpenProject Version: Cloud Edition

Operating System / Browser / Language: Win 10 / Chrome / German

###

### **Steps to reproduce:**

1. Go to page /projects/<project>/work\_packages
2. Click on Begin of the insertionbuttonEnd of the insertion Begin of the deletion butonEnd of the deletion "Filter"
3. Select Begin of the insertion"assignee"End of the insertion Begin of the deletion "author"End of the deletion or "start date" or "end date" as filter criteria
4. Two alternatives for Begin of the insertionassignee,End of the insertion Begin of the deletion author,End of the deletion the last for dates
1. Begin of the insertionAssigneeEnd of the insertion Begin of the deletion AuthorEnd of the deletion 1: Set the condition to "equal" (ist) and value to ""/empty/space -> not possible
2. Begin of the insertionAssigneeEnd of the insertion Begin of the deletion AuthorEnd of the deletion 2: Set the condition to "not equal" (ist nicht) and choose all users -> the results show tasks with Begin of the insertionassigneesEnd of the insertion Begin of the deletion authorsEnd of the deletion
3. Dates: There is no conditon for "is empty"

### **Actual Behavior**

I am not able to filter for the important tasks Begin of the insertion(unassigned/notEnd of the insertion Begin of the deletion (unaligned/notEnd of the deletion planned with date)

### **Expected Behavior**

To filter for the above filter criteria