As far as I can tell, it happened for nearly all of them. What’s weird though: some automatically generated tabs refer to 0 documents. But those could be the ones already automatically moved to the trash.
Which version of DEVONthink and of macOS do you use? I added the feed to a test database using the same settings but none of the downloaded items got a tag. A screenshot of your smart rules might be useful.
As to the smart rules: The only one I’m using is the one proposed earlier in the thread by @jooz. At least that’s what I think – I’ll make sure when I’m back at the laptop.
Oops - I just noticed that I have the feed database synchronized on iMac where the “convert categories & hashtags in tags” setting for feeds was set.
MacBookPro: no automatic conversion
iMac: automatic conversion
Both synchronizing over WebDAV. I assume that this could be the reason?
At least I now noticed tags for some feeds on the iMac.
To make clear that different settings on synchronized computers can have surprising side effects.
Or maybe this would be more useful in a FAQ? I noticed that some questions tend to arise in the forums several times because they are asked differently or the solution is hidden somewhere deep in the thread (like here, and like the question about keyboard short cut stolen by some weird Logitech daemon).