Selection outline not visible when actor is selected on certain AMD GPUs

When selecting an actor in the viewport, some AMD GPU users are reporting that the selection outline is not visible.

Rolling drivers back to 17.1.1 correct the behavior.|

Two EngineQA tester have seen an issue where selection outliner is not visble when an actor is selected. This behavior has been reported on the following environments.

OS: Win7
GPU: RX-470
Driver Version: 17.2, 17.3, 17.4

OS: Win10
GPU: R9-380
Driver Version: 17.2

I was not able to reproduce on the following environment:

OS: Win7
GPU: R9-390
Driver Version: 17.3, 17.4

browsing through the forums I did find a thread where some users were experiencing the same issue.

https://answers.unrealengine.com/questions/572170/selection-outliner-is-not-apearing.html?sort=oldest&lang=ko

in all cases rolling the driver back to 17.1.1 has corrected the behavior.

On a machine with the following configuration:
OS: Win7
GPU: RX-470
Driver Version: 17.2, 17.3, 17.4

1. Open a new first person project with starter content
2. Select the floor mesh in the editor viewport

Expected:
the floor mesh will be outlined while selected
Actual:
the floor mesh is selected, but no outline is displayed.

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