Ok, ok.
I have tested with empty projet, same issue.
I have rebuild lazarus, same issue..
I have rebooted my mac, same issue...
I have leaved my desk to smoke some cigarets, then I have launch again lazarus...and Editor is back
But I do not know why, how...
After running into a lot of problems with Mac OS API, then Indy... oooooooo, I began to loose my faith in pascal
Anyway, now my editor is back and I have also found a workaround about Indy bug.
Thanks.
André.