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WebPagetest Forums - First Byte missing for iPhone 8 iOS 13

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Full Version: First Byte missing for iPhone 8 iOS 13
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I tried to execute test using iPhone 8 iOS 13, I got the response as well, but I can see first byte data is missing there. Can somebody suggest why is this so.
Test URL:

One more query I have: When I use Moto g(gen 4/gen 6) with Firefox, I am not getting the performance data properly(first byte and #requests are missing). Even the waterfall is also not captured properly, While with chrome it working fine, any suggestions.
Test URL:
Reference URL's