ID 372027 - NukeStudio Sequence Viewer cannot display certain channels/channelsets

Problem summary
The Sequence Viewer cannot appear to display certain channels/channelsets which are exported by Nuke.

If an exported EXR is wrote in the form of an descriptivename.alpha, the channelset does not contain other channels. They can be written, read, and viewed properly in Nuke.

Nuke Studio can tell the custom channelsets are there (i.e. their descriptivename appears in the channelsets dropdown in the sequence viewer), but displays them as blank or with one frame of color.

Customer reported version
nuke.11.1v3

Customer reported platform
centos6

Steps to reproduce

1) Setup a Nuke Node Graph & Properties like the following:
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2) Write out the multichannelTest.####.exr file

3) Open NukeStudio and import the footage

4) Switch to the additional channelset and compare the Viewer with Nuke.

Result: Both the Nuke Viewer and the Sequence Viewer will display different results.

Workaround
Unknown. 

Reproduced by support

This bug has been reproduced in:
NukeStudio11.2v4 - Windows 7 - Mac10.13 - CentOS6.9
NukeStudio11.2v1 - Windows 7
NukeStudio11.1v4 - Windows 7
NukeStudio11.1v1 - Windows 7
NukeStudio11.0v4 - Windows 7
NukeStudio11.0v1 - Windows 7
NukeStudio10.5v7 - Windows 7 - Mac10.13 - CentOS6.9
NukeStudio10.5v1 - Windows 7
NukeStudio10.0v6 - Windows 7
NukeStudio10.0v1 - Windows 7
NukeStudio9.0v9 - Windows 7
NukeStudio9.0v1 - Windows 7 - Mac10.13 - CentOS6.9

Earliest version tested
- This issue appears to be in all versions of the product

Expected behaviour
Both Viewers should display the same results

Actual behaviour
The Sequence Viewer is missing channel information.