The font rendering has already been reported, I'm just adding my experience here in video form, which was a bit more efficient than screen grabs. You'll see that a good proportion of fonts have some corrupted letters, a few don't show at all (blank screen) and there doesn't seem to be much consistency. This video goes from "ACME Font" to "Gentium Basic" on my W10 machine.
Perhaps also mentioned is the finding/loading of fonts (Windows 10). Here is a partial list (A to Gabriola) in Arena 6 rev60446 (left) compared to another application (right).
Even between A and Gabriola, there are many fonts missing from Resolume's list, both TrueType and OpenType.