ID 400747 - Publishing fails with new, blank panels added in the sequence

Problem summary
If publishing a sequence that has new, blank white panels added via the New Panel button, it will fail and throw the following error:

level=error msg="JobChain.processJob: job failed, stopping chain" Job="Create Timeline job" error="no media objects for ref ‘dnxhd"

Customer reported version

6.1.0_28

Customer reported platform

CentOS 7

Steps to reproduce

1) Open sequence revision in Flix

2) Add new panel(s) via the New Panel button

3) Publish the sequence

Expected behaviour
Flix publishes to editorial successfully, with all correct files generated

Actual behaviour
Publish attempt fails, throwing "no media objects for ref ‘dnxhd" in the log

Workaround
If blank panels are desired in the sequence, the New Template action within Photoshop should be used which can then be sent to Flix before publishing

Reproduced by support

This bug has been reproduced in:
6.1.0