<amp-animations> Animations are not visually displayed on actual iPhone device on Safari browser

[dzarmanova]

Description

Animations are not visually displayed on actual iPhone device on Safari browser

Reproduction Steps

1. Use test link for physical phones https://playground.amp.dev/?url=https%3A%2F%2Fpreview.amp.dev%2Fdocumentation%2Fexamples%2Fvisual-effects%2Fbasics_of_orientation_effects&format=websites&_gl=1*9lnn1t*_ga*YW1wLVRzLTB2YmxwUlhTaTBTVGFWWEk2a2c.
2. Tilt phone and observe result

Actual result: Animations are not visually displayed when phone is tilted
https://photos.app.goo.gl/fRSeeJTNJvMmdU9FA

Expected result: Animations are visually displayed when phone is tilted
https://photos.app.goo.gl/fsQaMGRs2kgQMgCT8

Relevant Logs

No response

Browser(s) Affected

Safari

OS(s) Affected

No response

Device(s) Affected

iPhone XR

AMP Version Affected

No response

[erwinmombay]

@powerivq could you take a look at this when you get some time