Hugo does not render identical URLs with different letter case when disablePathToLower = true

Given disablePathToLower = true in env config.

And a Page Bundle with two similarly named files:

_PENTIUM.NFO.md
_pentium.nfo.md

Where each file includes an explicit url setting:

linktitle = "_pentium.nfo"
title = "_pentium.nfo"
url = "piracy/NFO/_pentium.nfo.html"
linktitle = "_PENTIUM.NFO"
title = "_PENTIUM.NFO"
url = "piracy/NFO/_PENTIUM.NFO.html"

Hugo does not render a page for _PENTIUM.NFO as expected and attempting to coerce page rendering using the render = true build option results in the same result.

Given disablePathToLower = true in config Hugo should render one page for each of _pentium.nfo.md and _PENTIUM.NFO.MD. Unexpected behavior exists for both hugo and hugo server commands. Tested with Hugo 0.70.