Exposed filter with a default selection: Manually selecting <Any> is broken

I have an integer content field with 2 possible values.

If I expose a filter on this field, but set no default and leave it as optional, I can select a filter on [Any], [Value 1], or [Value 2]. If I set it to default to [Value 1] and leave it optional, it will work - however If I then manually select [Any] and apply the filter, it still filters by [Value 1]. I believe expected behavior would be to ignore the filter if set to [Any] but this is not happening.

I didn't know whether to submit this here or to views, as this may just be a content handler issue.