Hi
@May Hu, having a tough time reproducing this. I also see these pages were edited recently so maybe you all figured it out. The one thing I say here is maybe the Mobile Video component was loading in because it was set to Eager Load and Auto-Full Screen (the latter is off now)?
If it's still happening, maybe you can give us some more reproduction help? I tried opening this page:
https://takestasis.com/pages/yourbrain_0605_gwpcase
in a normal browser on mobile and also opening in the IG browser (not via an ad but just via a message send via DMs). Are you able to consistently reproduce and if so how? What flow are you using and what device are you seeing this on?