Hi, Len - I remember it had to do with a window hiding behind the Dcad window, but when you close the Dcad window the missing window/toolbar closed as well.
I'll see if I can remember who on the forum was dealing with it. My first guess would be that Josh H. was a part of tracking it down, but beyond that I don't remember who had the problem.
Highest Regards,
Alan T. Hendry, RA
Intel i7-12700F (2.10 GHz) Desktop, 16GB RAM, 1TB SSD, Win 11 Home 64-bit, DC 22 w/ latest beta
Intel i7-10750H (2.6GHz) Laptop, 16GB RAM, 1.5TB HD, Win 11 Home 64-Bit, w/ DC 21, 22 & latest beta