I'm seeing ads in the "Social" and "Promotions" tab, the Primary tab remains ad-free.
Google Chrome 61.0.3163.100 (Official Build) (64-bit)
Clean install of AdGuard 6.1.331.1732 with the following filters:
English, Social Media, Annoyances, German
Unblocking "Useful Ads" is disabled, so is the filter.
Everything else is default, WFP drivers, HTTPS protrocol is filtered, not filtering EV certified sites is disabled (so they should be filtered).