In a record list page:
if I try to filter based on a checkbox value, whichever combination I use, equal or not equal to, checked or unchecked(only two options available, can’t for instance write in TRUE into the filter), it returns an empty list.
However if, when setting up the record list element, I use the prefilter option for MyCheckboxValue = True, it works fine. Meaning the workaround is creating dedicated pages for checkbox value filtering.