Are the Responsive mode can't use at "build apk" ?

[IFBHK]

hi ,

i am using the "http://responsive.appinventor.mit.edu/" , and install the new AI Companion at my phone .

when i preview at my phone at AI Companion app , it can show "Responsive" mode and everything fine ,

but when i build it as apk and install at the same phone , it didn't show it as "Responsive" mode .

is the responsive mode didn't available at build apk at this time or my setting wrong ?

i am using sony xperia z ultra .

Thanks everyone , Cheer up Team MIT :)

Sorry for my English , English is not my first language :(