Found a BUG, trying to open an mfa as subapplication through event, it shows a blank window and pressing alt on it it shows a message "This is not an application file!"
It looks like it will only open ccn through events, but mfa is acceptable in the subapplication settings (please let we open mfa in both ways!)
It opens if the file is renamed from mfa to ccn
Also, it seems like "end of frame" and "end of application" are not detected inside subapplications
Aaaand... Doesn't "end of frame" and "end of application" trigger when frame or application is restarted?