ID 407014 - Resolution widget not highlighting existing value when pressing Tab to switch between number fields

Problem summary

When manually entering a value for the resolution parameter on RenderSettings nodes, the existing value in the number fields is not highlighted when you press Tab/Ctrl+Tab to switch between the two fields. 

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The user has to delete the existing value first to enter a new one.

The value is highlighted correctly if using Tab to switch between the fields without changing the value.

Customer reported version
Katana 3.2v1

Customer reported platform
Unknown.

Steps to reproduce

1. Create a RenderSettings node.
2. Enter a value into the first number field of the resolution parameter.
3. Press Tab to switch focus to the second number field.

Expected behaviour
Input focus switches from the first to the second number field. The existing value is highlighted, enabling the user to type a new value to replace the old one immediately.

Actual behaviour
Input focus switches from the first to the second number field. The existing value is not highlighted and the user needs to manually delete the old value in order to replace it.

Workaround
Unknown.

Reproduced by support

This bug has been reproduced in:

Katana 3.2v1 - Windows 10, CentOS 7
Katana 3.0v1 - Windows 10
Katana 2.5v1 - Windows 10

Katana 1.6v3 - CentOS 7

Earliest version tested
Katana 1.6v3
- This issue appears to be in all versions of the product