Links to tags are not hidden by spoilers:
tags are issues in spoilers
For a start why? I don't see what purpose being able to see the outline of a tag (it is more visible on other sites) when all other pieces of text are hidden.
It has proved problematic in several cases, especially on Puzzling, where hidden answers are imperative 90% of the time.
Also can this be changed? I don't want to cause a massive fuss, so if this is too big to sort out, then don't worry about it.