ios - Page in Page View Controller has a sudden dropping down motion -

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i have 2 pages in app transitioned uipageviewcontroller. first page loads fine second page have 'dropping' motion similar .gif image below. enter image description here

this occur once when page loaded. not sure causes suspicions constraints. seems applying constraints when page loaded.

i looking @ solution pre-load pages first , if works, expand solution pre-load previous , next page (if any). if there better solutions out there, share me.

i've had similar issues caused navigation controller/navigation bar , automaticallyadjustsscrollviewinsets property in code, or "adjust scroll view insets" property in storyboard. looks first page not have set, , second page does.


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