On Persian Wikipedia, if we go to abuse filter log[1] and then click on "examine" next to any of them, and then load the same filter ID, and finally click on "Test filter" button, no matter what the conditions are, it always returns a "The filter did not match this change" response.

Even for a very simple condition like 2>1 the test always fails to match.[2]

Although the "Test a filter against previous edits"[3] still works fine, but still this bug has made testing and development of filters hard and confusing.

[1]: https://fa.wikipedia.org/wiki/ویژه:سیاههٔ_خرابکاری?&uselang=en
[2]: https://fa.wikipedia.org/wiki/%D9%88%DB%8C%DA%98%D9%87:%D9%BE%D8%A7%D9%84%D8%A7%DB%8C%D9%87%D9%94_%D8%AE%D8%B1%D8%A7%D8%A8%DA%A9%D8%A7%D8%B1%DB%8C/examine/log/609324?&uselang=en
[3]: https://fa.wikipedia.org/wiki/%D9%88%DB%8C%DA%98%D9%87:%D9%BE%D8%A7%D9%84%D8%A7%DB%8C%D9%87%D9%94_%D8%AE%D8%B1%D8%A7%D8%A8%DA%A9%D8%A7%D8%B1%DB%8C/test/122?&uselang=en