Middle Mouse Button Measurements in 'Front' mode measuring based on Y location

Development Modding
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1

When using UE4 in Front mode, using my middle mouse button to measure distances, I am receiving some strange results.
The measurement will add the value of the Y location to the measurement, giving an inaccurate location.

This is obviously a feature, but it is really messing me up. How do you disable this feature?

2

The solution is likely very obvious, but it escapes me, and is still hindering my progress. I’d appreciate some advice.

3

Anyone have any knowledge that they can share with me?