Adding space at end of JQL in a saved filter breaks the Save button

Summary

When a filter is changed and saved, you will see a 'Save as' button to duplicate the filter. When you modify a saved filter, add a trailing space to the JQL query, run the query, and click on the 'Save' button; the filter is saved but the 'Save' button remains. You will receive a pop-up that indicates that the filter was saved, but you can no longer duplicate the filter because the 'Save as' button is not displayed.

Steps to Reproduce

1. Create a filter
2. Open the filter and modify the JQL to add a space to the end of the query
3. Run the query
4. Click the Save button
5. Note that you receive a success message, but the Save button remains
6. Remove the space at the end of the query
7. Run the query
8. Click the Save button
9. Note that the 'Save as' button is displayed

Expected Results

The trailing space should either be ignored or the advanced query logic should throw a warning/error blocking the query from running until the space is removed.

Actual Results

The filter is saved with the space, and the Save button doesn't display correctly