An IDE anomaly

I have the alias
v:\> alias d
*dir /a /p /m /k /h
I give the internal command "IDE". If the alias watch window is not showing I switch to it. In any event, the 'a' (in "/a") appears as a black box (see attached PNGfile). If I move the insertion point to that line (anywhere), it appears as boldface 'a'. If I move the insertion point off that line it returns to appearing as a black rectangle.

Note also (in the image) how a literal 0x1B appears (in the @@Ctrl-F10 alias); that behavior is constant. ide.png