I just noticed that the TItle field in Special:AbuseLog is mandatory by HTML. But, the server do not require it, as https://cs.wikipedia.org/w/index.php?title=Speci%C3%A1ln%C3%AD:Z%C3%A1znam_filtr%C5%AF_zneu%C5%BEit%C3%AD&wpSearchFilter=1&uselang=en is legal URL ((auto)confirmed account is required) and it is providing a list of actions performed by AbuseFilter #1 on Czech Wikipedia, no matter the article title (or what the title field is supposed to mean).
I can create the correct URL manually, but it would be nice if I can just use the form.
Screenshots are in attachments.
Thank you for fixing this,