Accepting tracked changes quickly

When accepting tracked changes, sometimes the next change is highlighted automatically, which is nice because it allows to go through the changes quickly. However, in some instances (and regardless of browser), this does not work. Then, for each change two clicks are needed, one to highlight the change and another to accept it, which is very tedious if the document contains many tracked changes.

Unfortunately, I have not yet discovered a pattern when one or the other of these two behaviours is triggered. So, is this a bug or a feature? Which of the two is expected? Am I overlooking something obvious?