iOS 14.5 RC breaks push/pop transition animations on iPhone

App with 3 split view using Navigation view. This on an iPhone automatically becomes stacked navigation style. so drilling down into detail views ... will have the normal transition animations of pushing and popping views.

But these transitions are not working on iOS 14.5 RC /Xcode 12.5RC . Now tapping on a master...the detail appears without the push transition animation :(

Same code works just fine on stable versions of iOS 14.4 and Xcode with the push/pop transition animations.

Not sure what changed but any workarounds to restore these transitions on iPhone?
iOS 14.5 RC breaks push/pop transition animations on iPhone
 
 
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