Hi there,
i am also having trouble with popups, but only in android browser and as android build on phone Samsung S3 Android 4.3. In chrome browser (on same phone) popups work fine.
I used a 200ms delay and switched of transitions, but it didnt change the way the popups are displayed in android build. I also see the same thing happening for select component (see images) in android build. It seems like the page in the background is scrolled way down to the bottom, when the popup is opened the first time.
Do you have an idea, why this is happening? Is this an issue with the framerate? I noticed Youtube videos in android build dont look so smooth.
I know i saw a post about this issue on the forum, but couldnt find it again.
Cheers