^ on my desktop, SC main window shows up after capture with following settings:
this setting unchecked:
"the Capture Options tab, and uncheck "Hide Screenshot Captor Window""
Hide main form is selected via tray icon context menu (not sure where that is in options) -- see shot below.
EDIT// via Capturebar, setting post-capture is
"Save [file] but keep main window minimized" //EDIT

But when I take a screenshot, if the SC window is open in the background, it will come to the front and stay there.
Presumably some setting is different between the machines...
SC up-to-date on both machines.
Windows 7 x64 both
Installed in desktop, not sure if laptop portable or installed..
desktop ini file attached