BUG: Filter ʒ with decimal 1.0 doesn't act as truthy

[kcruijss]

I wasn't expecting to find a bug so soon again after posting all those others last week, but just came across this:

When you use a filter ʒ and the result is a decimal 1.0, it doesn't act as the expected truthy result for the filter.
Casing it to a string with §, or filtering with Ï on the decimals do both work as intended.

Try it online to reproduce.
Came across it in this codegolf answer of mine (where I now use DOÏ as equal-bytes alternative).