Line Trace Does Not Register Hit On Bottom Of Landscape

When using a line trace under a landscape it no longer registers a hit on the underside.

REGRESSION?
Yes

Worked 4.13.2 CL 3195953
Broken 4.14.1 CL 3224400

1. Open attached project
2. Move the Blueprint actor named "TraceBP" under landscape

RESULT
Line trace doesn't register hit

EXPECTED
Line trace returns hit

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