ID 484498 - Increasing Environment Light Resolution does not improve reflection quality

Problem summary
Increasing Environment Light Resolution does not improve reflection quality

Customer reported version
Mari 4.7v4

Customer reported platform
Windows 10

Steps to reproduce

1) Open any project

2) Create and view a Principled BRDF Shader. Set Metallic = 1.0 and Roughness = 0.0

3) Set Lighting to Full by pressing [F3]

4) In the Lights Palette, click the Environment Light and ensure Environment > General > On is ticked

5) Select one of the default HDRIs in the Environment > Texture > Image property

6) Increase the Environment > Texture > Resolution property from 64 to 512 and observe the quality of the reflections on the Object

Expected behaviour
As Resolution is increased, the quality of reflections should improve.

Actual behaviour
Changing the Resolution has no effect on the quality of the reflections.

Workaround
Unknown.

Reproduced by support
This bug has been reproduced in:
Mari 4.7v4 - Windows 10 - CentOS 7.9
Mari 4.7v1 - Windows 10
Mari 4.6v2 - Windows 10 - CentOS 7.9 - regression

Unable to reproduce bug in:
Mari 4.6v1 - Windows 10 - CentOS 7.9

Earliest version tested
Mari 4.6v1 - This issue doesn't appear in this version and has regressed