iPhoneX iOS14b4 LR5.3 dark captured photos

Specs:

iPhoneX iOS14 public beta 4

LR 5.3.1 53B120

Upon taking a RAW photo in LR5.3 mobile, in either Auto or Pro mode, the captured photo in "All Photos" is very dark (under-exposed by 0.5-1) compared to the LR viewfinder. This is a new behaviour compared to previous versions of LR mobile for iOS.

I understand that I am using a non GA version of iOS but that above behaviour does not happen with other RAW apps (Camera-M) on same device/iOS. Please see attached screenshots, LR_Viewfinder is the screenshot as I am viewing the scene to take a photo of, LR_Dark is the RAW photo captured and opened in LR for editing.

I have deleted, rebooted and reinstalled LR5.3 for my device.

thank you!