This question is an exact duplicate of:
I was setting up some ignored tags today, and I noticed that after adding an ignored tag through the sidebar UI, the Ignored Tags section disappears after you refresh the page, and won't show up again until you click the "edit" button to edit your favorite/ignored tags again (see screenshots).
Before (after adding ignored tag)
After page refresh
I've reproduced the behaviour in both:
- Chrome 45.0.2454.101 m
- Opera 31.0
so I assume that this isn't specific to a particular browser. I've also reproduced the behaviour here on MSE, as well as Stack Overflow, so I assume that it's not specific to a particular exchange site either.
So is this a bug, or is this the intended behaviour? If intended, what's the rationale behind it?