I never noticed this...and to be candid, I'm not sure I would have cared. But it is a little different that what might be expected behavior.
In searching the Community, I have not found a thread where anybody brings this up or where this behavior was ever discussed before.
You mentioned, "this would certainly have an impact on the way our customers would be using the community". How would it have an impact on them? I am a power-user on this Community and I have never even noticed this (so it is not impacting how I use this particular community), but perhaps I do not understand what you mean. Can you explain a bit more about how this type of behavior would impact your Community member's usage?