Sequencer Filmback stuck on original setting

Sequencer Filmback is stuck on original setting after the first save and reload of the level.

Create a spawnable cinecamera Imax70mm
change it to dslr 16:9
save sequence, package and level.
Reload project and level.

Camera goes back to Imax70mm after you close sequencer and reopen, no matter how many time you change it or save.

I noticed that saving the level also reset the camera Filmback to the “First saved setting ever”

repro steps,

1- create new CineCamera in Sequencer, set the filmback desired,
2- save sequencer, close and reopen it.
3- Now switch the filmback setting to another camera type.
4- Without closing sequencer and with camera highlighted.
5- In the main editor interface; Click on the top left FloppyDisk save icon and look at the detail of your camera change back to the original saved setting.

I get 100% repro rate at work and at home in different projects, even from a brand new project this happens.

UE4 4.12.5 on windows 7

I got the 4.13 preview 3 yesterday and tested this issue, it seems resolved already in this build. Thanks.

Still present in 4.15 for me.