Ok. Thanks for taking the time to troubleshoot this. This is happening on other machines as well.
I dug a little deeper... its not "medium" per say. Other fonts have other issues not displaying other font styles. It looks like Text isn't pulling all the fonts.
In Text+ effect, the fonts work as expected. But not the Basic Text Effect.
In Text+
I get these options on a default OpenSans font:
Listed Alphabetically in Text+
Bold
ExtraBoldLight
RegularSemiBold

- Text+.png (169.5 KiB) Viewed 1411 times
But in Text - I only get:
Light
SemiBold
Bold

- Text.png (103.58 KiB) Viewed 1411 times
No ExtraBold and No REGULAR!
With the fonts I need for this project, I get the font options "Light", but in Text Effect it reverts to ExtraLight after the selection.
It looks like Text Effect isn't reading the fonts correctly. Kinda a problem for doing Text.