<p>After trying four times to edit <a href="https://stats.stackexchange.com/questions/8334/chow-test-or-not">this question</a> to add the "<a href="https://stats.stackexchange.com/questions/tagged/change-point">change-point</a>" tag to it, which is associated with three existing questions, I have been unsuccessful: no matter how emphatically I type :-) it always gets converted to "<a href="https://stats.stackexchange.com/questions/tagged/changepoint">changepoint</a>" <em>and this (unwanted) tag only links to the question itself!,</em> not to the other questions.  Something's wrong here.  Am I misunderstanding how the tagging is supposed to work?</p>
