wordpress autopost prevents Stealth Update from working

Hi,

I’m facing a weird issue where I hope anyone can give me a hint to solve it (and yes, I know it’s not the fault of this plugin!):

The autosave function of WordPress seams to change the post_modified database entry of posts (which it’s not supposed to do so, but does anyway, in my case). i.e. the post_modified date is being changed in the database even if I don’t press the “update” button at all!

This of course is rendering the function of the Stealth Update plugin mostly seless as the post_modified date is being change before the plugin even starts working. When I save a posting with the Stealth Update checkbox active prior to autosave (i.e. before the 60 seconds standard autosave interval), the plugin works. But as soon as autosave has fired once, the plugin is useless as the post_modified date has changed already before the plugin starts working …

I’ve been testing for hours now, including deactivating all plugins and checking the theme.

Maybe anyone has an idea what specifically to look for? I’m wondering what can modify the behavior of WordPress’s autosave in this weird way?

Thanks and kind regards
Franz