Material Parameter in Static Switch Branch of True Controlled by Quality Switch Not Showing Up in Material Instance Panel

In material editor, if a quality switch node is used together with a static switch to control branch, material parameters in the 'true' branch will never show up in the Detail panel of material instance.

Example Material:
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Example visible params in Material Instance:
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1. Download the attached project.
2. Open the Material (/Game/M_QualitySwitchTest) and verify the Static Bool is set to True
3. Open Material Instance (/Game/M_QualitySwitchTest_Inst) and note the wrong parameter is visible.
4. Toggle the Static Bool parameter in M_QualitySwitchTest and Save
5. Look at the global params in M_QualitySwitchTest_Inst

Expected

If the Static Bool value is True, Param A is shown.  If the Static Bool value is False, Param B is shown.

Actual

If the Static Bool value is True, Param B is shown.  If the Static Bool value is True, param A is shown.