I made the correction in WVG, now the double click will be in the correct situation (unpleasant situation, in addition to possible unintentional activations).
If anyone can update Harbour, contact me privately so I can share the code.
I also made additions* to WVT (src\rtl), I can share them later.
*just to be able to manage windows from outside. The management is done by my class, compact usage.