'last x months' smart playlist GUI issue

Please fill in this bug report template:

Lexicon version: 1.3.2
Operating system (remove one): Windows

Bug description:
editing an existing smart play list configured to show tracks with an added date less than x months, the GUI is incorrect:

the playlist appears to function as expected, but editing results in having to reset the values to accepted values

Step by step to reproduce:
create smart playlist names ‘_recent’
configure ‘date added’ field to include tracks within last 3 months
save
edit list and notice how the rule values look

the only way to save this list is to re-add acceptable values

Screenshot:

Thanks, I’ll check that