Can't figure out how to fix the rounded corners on the preview when doing V carving

Software Carbide Create
3

Here:

image
image.jpg1920×1080 408 KB

which appears as:

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image.png1920×1080 146 KB

Select the letterform and inset it twice by a distance less than the diameter of the endmill:

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image.png1920×1080 122 KB

resulting in:

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image.png1920×1080 138 KB

which when toolpaths are assigned previews as:

image
image.jpg1920×1080 293 KB

Attached.

W.c2d (91.4 KB)