Bug 109290 [WorkbenchLauncher] splash screen blocks the switch workspace dialog and creates illusion of hung application
While starting up the "select workspace" dialog sometimes comes up behind the splashscreen and is completely obscured. A user may interpret this as the application having hung.
bundles/org.eclipse.ui.ide.application/src/org/eclipse/ui/internal/ide/application/IDEApplication.java
if (workspaceUrl == null) {
				return false;
			}
            
            
            force = true;
            try {
                
                
                if (instanceLoc.setURL(workspaceUrl, true)) {
                    launchData.writePersistedData();
                    writeWorkspaceVersion();
                    return true;
                }
            } catch (IllegalStateException e) {
                MessageDialog
                        .openError(
                                shell,
                                IDEWorkbenchMessages.IDEApplication_workspaceCannotBeSetTitle,
                                IDEWorkbenchMessages.IDEApplication_workspaceCannotBeSetMessage);
                return false;
            }
            
            
            MessageDialog.openError(shell, IDEWorkbenchMessages.IDEApplication_workspaceInUseTitle, 
                    IDEWorkbenchMessages.IDEApplication_workspaceInUseMessage);
        }
    }
    /**
     * Open a workspace selection dialog on the argument shell, populating the