Accumulate DOF not working in 5.8.1

Summary

5.8.1 hot fix does NOT solve issue with Accumulate Depth of Field. Whether Enable Motion Blur is checked on or off on the component, renders are mostly alpha!

What Type of Bug are you experiencing?

Rendering (Graphics / Niagara)

Steps to Reproduce

1 Enable Accumulate Depth of Field.
2 Render
3 Check result

Expected Result

Result should work

Observed Result

Preview in Viewport is correct.
Render Preview is correct.
Rendered frame is mostly alpha. ie alpha channel mostly black
Disabling Accumulate DOF and renders are correct (with legacy DOF)

Affects Versions

5.8, 5.8.1

Platform(s)

Windows 10

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Additional Notes

Might be related but using a Squeeze Factor on camera produces a distorted (squished) image when Accumulate DOF is enabled.

Seems to be working in 6.0 main. However same issue with Squeeze factor horizontally squishing image.