I'm a little puzzled by how to search for articles when they have child tags. For example, I have an article that carries the child tag email/Gmail. I would have expected that a search on either email or Gmail would turn up the article, but that doesn't seem to be the case. To find the article, I have to put in the separate tag email, even though that's the parent of Gmail. Is this the expected behavior or a bug? If it's the expected behavior, there seems no point to having child tags--I'd be better off using email and Gmail as separate tags.
When you type into the `Tags Filter` the auto-suggest list matches on parent and child tags, so typing gmail would match 'email/gmail' as would typing email. If you are talking about the Search box (full text search) this searches article content, not tags.
You can type into the Tags Filter to narrow down what is displayed in the list. You can also use cursor up/down to move through the list of matches and Enter to select one. Am I missing something there?