Small Luminance change at Cross Dissolve transition

Resolve 15 Beta 5
ProRes 4444 4K DCI clips: I do see a very small luminance step at the beginning and the end of a Cross Dissolve video transition. It is indeed very small but very annoying when you do smooth color area transitions between two clips. I thought this is a problem in the Edit page after cache rendering but it stays the same after final delivery. The error is independent of any kind of transition setting, I have tried all possible parameters. Then tried edge aliasing setting in the project settings but no effect here again.

Any hint/help highly appreciated, and if this is indeed a bug please fix it soon... I cannot live with that for a high quality theatrical release!

Thanks!

[Peter Chamberlain]

Which OS are you using?
Do you see this on the internally generated ramp?

Late Mac Pro 2013, OS High Sierra 10.13.3.
Yes, it occurs on the internal ramp. I can clearly see it when I put the timeline cursor on the beginning or end of the ramp and switch one frame forward or backward. In my opinion/guess it's maybe just one LSB bit jump in luminance, and as I described totally independent of the type of transition (video, film etc., custom ramp or anything else...). I have changed the monitoring resolution to 12 bit as my Sony BVM-X300 can handle that at 4x SDI out but no difference. It's clearly not a monitoring problem but something which happens on Resolve processing areas (I guess...).

[Peter Chamberlain]

Can you post a drp of the internal ramp clips that show it?
A phone video of what you see will help too.