@milife. Yes it seems like a new feature. If you click on any topic in the left-hand column, (e.g. bitcoin) then when you click on new, trending, promoted etc, it will only show topics related to bitcoin.
To stop this, click on the Steemit logo at the top lefty of your screen.
OMG Thank you!!! That is very helpful and time saving because I've been going back to "my blog" and then back out the the feed to clear it which was really annoying. Thanks again and Have a nice day!!!