Existing Installed Instances Detected dialog does NOT appear, want it to appear

I may be the only person that actually wants the dialog to appear if there are multiple installs !!!

InstallShield 2014 converted my original project from InstallShield 11.5.
The setup built by IS 11.5 would display the Existing Installed Instances Detected dialog

Now the IS 2014 setup does not display the dialog.

My "Maintenance Experience" is set to "Multi-Instance"

I would like the dialog to appear.
What can I do ?

Thanks for reading.