Hi,
There is no known issue with the date filters at the moment for sure. Those are only the display formats, they does not affect the filters.
The two most common issues are, that either the storage format or the operator is set incorrectly: https://i.imgur.com/szBx5FM.png
At first, I would recommend trying different variations to see if that makes any difference. The default storage format of the filter is “ACF datetime field”, which is not the same as the simple “ACF date” field, I am almost sure, that that is the problem. Try chaning that option first.
