Mirror text about element center is wrong

Are you sure it's not mirroring about the justification point? I seem to recall that "about Center" with text will use the justification instead of the exact center. Or am I just confused?

Hmmm, quite an interesting observation. With text the justification point, I believe, is the "center" of the element. So, I would think that if you are mirroring text About Element Center it should be using this point. I have tested this in the major versions of MicroStation going to back to V8 2004 and they all show this small discrepency in the position of the text as per how you have described. It also does not appear to matter which sort of justification is used with the placed text as you can see here with Top Left and Centre Centre. I have an idea that this is actually Working As Designed (WAD) and is related to the sizing of text using pixels rather than working units but will have to investigate further.