[OS X TeX] TeXShop automatic hiding/unhiding of root file

[roberto avanzi]

I have a few documents split into a root file and several included files.
The first line of the included files is

%!TEX root = ./some-name.tex

Now, suppose I am working on that project and I close TeXShop.
When I reopen TeXShop the root file goes to the dock, then comes out again, for EACH included file that is reponened. This is a bit maddening, is unpleasing, and introduced an unnecessary delay.  I cannot find an option to disable this automatic hiding/unhiding of the root file.  Can anybody help?

 Roberto