ID 399587 - When reverting to an earlier panel revision, clicking the 'M' in the Revisions/Related/Masters drop down will crash the client

Problem summary

When reverting back to a previous panel revision, if the 'M' is clicked from the Revisions/Related/Masters drop down to switch the panel...

...the client will error out with the following message:

Customer reported version

6.0.5

Customer reported platform
10.13

Steps to reproduce

1) Create new panels in Photoshop using Layer Comps

2) Send them to Flix using the "Each Layer Comp" action

3) Edit one of the layer comps and send it back to Flix using "Replace Selected Layer Comp" action

4) In Flix, click the updated panels Panel ID to display the Revision/Related/Master drop down

5) Click the 'M' next to the panel revision you want to revert back to

Expected behaviour
The panel would revert back to the revision selected

Actual behaviour
The client errors out, displaying "_co.onOpenMediaObject is not a function"

Workaround
To avoid the error, users should click the thumbnail image of the panel displayed in the drop down menu, rather than the 'M'

Reproduced by support

This bug has been reproduced in:
6.0.5, 6.1.0

Earliest version tested
6.0.5 - this appears to be present in all versions of Flix