I've been testing out the different actions of the Abuse Filter extension to see how they work (restricting the filter to only check edits done by me, obviously, so it doesn't disrupt the rest of the wiki). One of the options is to warn people before they make a bad edit so they can fix it before further action is taken. However, this warning only seems to show up when editing normal pages, and only with the classic editor (it works fine in Source Mode). Using the VisualEditor just says "The modification you tried to make was aborted by an extension hook" (not very helpful), and nothing is said at all when commenting, and the comment is just prevented from showing up (since I also have the "disallow" flag turned on).
Is there any other extension or JS query which can show the warnings specified in the AbuseFilter configuration page upon the filter being triggered?