ID 388986 - When using the Pack UVs tool the UV islands are scaled up even if Stretch is disabled.

Problem summary
When using the Pack UVs tool the UV islands are scaled up even if Stretch is disabled.

Customer reported version
modo.13.0v1

Customer reported platform
windows10

Steps to reproduce

1) Create a Cube mesh, and select all of the edges on the Cube.

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2) Select the UV tab, located just above the 3D viewport

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3) With the edges still selected left-click the Unwrap button found on the left sidebar.

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4) Keep all the default values and then left-click in the UV viewport to update the UV islands, they should look like the UV islands shown above.

5) Press Q to drop the Unwrap tool, then select Pack... make sure Stretch is disabled and press OK.

6) You will notice the UV islands have been scaled up even though Stretch was disabled.

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Expected behaviour
The packed UV islands should retain their original size when Stretch is disabled.

Actual behaviour
When packing the UV islands they are scaled up.

Workaround
Unknown.

Reproduced by support

This bug has been reproduced in:

Modo 13.0v1 - Windows 10 - Centos 7 - MacOS 10.13

Modo 12.2v2 - Windows 10

Modo 12.1v2 - Windows 10

Modo 12.0v1 - Windows 10

Modo 11.2v3 - Windows 10

Modo 11.1v1 - Windows 10

Modo 11.0v3 - Windows 10

Modo 10.2v4 - Windows 10 - Centos 7 - MacOS 10.13

Earliest version tested
Modo 10.2v4 - This feature did not exist before this version