Just an update! I’ve got it!
It is based on the time the apps are started up. I presume that, when booting the system, the python app is not really running, and CP does not goes up.
So you need to disable both, and then, boot up python first and wait 10-15 secs, and goes for the CP.
I think that a delay on the startup for an app that depends on other packages should be a good idea. Like 5-10 secs of delay after executing the start file, case of the CP.
Cheers.