Currently the filter options across a lot of objects/functions (lists, filters, reports, workflows…) offer
-Is Any Of
-Is None Of
-Is Known
-Is Unknown
I just found out that “Is None Of” and “Is Unknown” work differently. Take 3 different values for a field (last one is left intentionally blank):
Score = 0
Score = 1
Score =
“Is Known” matches 0 and 1, not blank
“Is Unknown” only matches the blank one
“Is None Of 1” only matches 0, not blank or 1
“Is Any of 1” only matches 1, not 0 or blank
I would expect “Is None of 1” to match blank but that is NOT the case, and should be clearer in the UI. Some may even expect 0 or FALSE to match unknown depending on context.
Either a pop-over [i] icon that explains in the UI or renaming “Is None Of” to “Is Known But None Of”