Adding on my wiki 1.35.2 on IIS 10 but does not seem to strip out the headings. Latest 1.35 Extension is installed.
Typical page wiki markup for the first few lines has NOTITLE NOTOC Then a = Page Title Text = then "body" text. Just not picking up the body text for some reason unless there isn't a = Page Title Text = at the start of the article. ALSO - why can't this work on category pages?
After trying every fix below that could be applied to the LocalSetting Files, I threw is everything I could find but it's still not working except as above.
$wgExtractsRemoveClasses[] = array( 'dl', 'h1', 'h2', 'h3', 'div', '.mw-editsection', 'table', 'sup.reference', '.error', '.nomobile' ) ;
Here's a link to a page on the wiki in question. It has a mix of links that work and don't work as per my explanation above.
https://dardpi.ca/wiki/index.php?title=The_Last_Train#The_Last_Train
Sorry about posting below in a thread that was already basically finished.