ID 306554 - Previously rendered comps display black frames after rendering another comp to the timeline.

Problem summary
Previously rendered comps display black frames after rendering another comp to the timeline.

Customer reported version
nuke.12.2v3

Customer reported platform
10.15

Steps to reproduce

1) From Nuke Studio, import footage to the project.

2) Drag + drop the imported clip(s) to the Timeline.

3) Create comps for each clip, then render the comps to the timeline.

4) Scrub the timeline to view the footage, observing any black frames.

5) Enter one of the rendered comps, add a Grade node and adjust a few knobs.

6) Re-render the comp to the timeline, then view playback on the timeline for other comps.

Expected behavior
The comps should remain visible without black frames when rendering other comps on the Timeline.

Actual behavior
After re-rendering a comp, other comps on the timeline can appear as blank footage or black frames.

Workaround
Disabling and re-enabling any track or track items fixes the black frames issue.

Reproduced by Support in:
NukeStudio 12.2v3 - Windows 10, macOS 10.13.6

NukeStudio 12.2v1 - Windows 10

NukeStudio 12.1v1 - Windows 10

NukeStudio 12.0v1 - Windows 10

NukeStudio 11.0v1 - Windows 10, macOS 10.13.6

Unable to reproduce bug in:
NukeStudio 10.5v8 - Windows 10, macOS 10.13.6

Earliest version tested
NukeStudio 10.5v8 - This issue doesn't appear in this version and has regressed