There is difference in what filters text field states in the hint and what is possible to input.

In the hint, there's statement promising wildcard support using '_' and '%' characters, but the input field itself behaves differently depending on what column the filter is defined on.

RHPAM-82 removes the possibility to input characters other than numeric for filters on numeric columns. Even before that such filters couldn't be created.

For numeric identifiers like ProcessInstanceId, there's probably no added value in providing the support for wildcard chars. In these cases, the hint should be removed to be consistent.
But for string based columns the hints and wildcard support should be retained.