I believe there is a bug in Replicator 3.7.3: the program window minimizes and loses focus after selection of source and/or destination directories using the BROWSE button during job creation. This can lead to inadvertant clicks into any other open program window. AFAICT only the BROWSE buttons are affected. More info on request. Thanks!
The second topmost window pops to top after a folder browsing is completed to select a Source or Destination Folder.
This has been a problem since at least 3.7.0.