ID 266187 - No audio warning appears when the is no video track is in a NukeStudio project

Problem summary
No audio warning appears when the is no video track is in a NukeStudio project

Customer reported platform
10.11

Steps to reproduce

1) Open NukeStudio

2) Import a wav audio file and add it to a new sequence

3) Delete the Video track from the sequence

4) Save the project.

5) Close and project and reopen it, it will say No Audio in the timeline Viewer.

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Reproduced by support
This problem has been reproduced on:
Nuke 10.5v2 - Windows 10
Nuke 10.5v1 - Windows 10 - CentOS 7 - MacOSX 10.12
Nuke 10.0v5 - Windows 10 - CentOS 7 - MacOSX 10.12
Nuke 10.0v1 - Windows 10
Nuke 9.0v9 - Windows 10
Nuke 9.0v1 - Windows 10

Expected behaviour
For NukeStudio to say it has no video when it has no video

Actual behaviour
NukeStudio actually says it has no audio, when no video track is present