If, using file compare, I compare the two "missing" files (I also made them equal), then, returning to dir compare, the files appear.
Mora as soon as I discover it.
I had also some other odd effetcs, but I'm not sure EDP is to blame for those and I had no time to investigate.
N.B. EDP 15.0.0.20 64 bit this time
![Surprised :o](./images/smilies/icon_surprised.gif)