After-Effects 2020: AfterFx.com -r returns immediately instead of waiting the script execution

Hi,

I was using `AfterFx.com -r myScript.jsx` to launch scripts, and it was waiting the end of the scripts.

Now I upgraded to After-Effects 2020, and when I run `AfterFx.com -r myScript.jsx`, the process in the command line has already returned, and my script is running on AE. 

Is there a simple way to guarantee that the command returns once the script has finished running ?

I'm not able to see the flags of AfterFx.com, I don't know where to find them. I tried to look at `aerender -h` but I don't see any flag for that purpose, neither in the settings menu. 

I would like to avoid having to do IPC between script & the command whichs runs the script, just to know if the script is running or finished.