I've also noted that DeoVR caches incorrectly. I viewed a index.html page, then if I change that page, DeoVR keeps serving up the same old page. I can add ?something (that is, an HTML query string) to the URL, which fools DeoVR into thinking that it is a new page, but that doesn't work when serving up the deovr JSON page. Fortunately these are not cached (as much).
The only way I saw to get DeoVR to re-read the page, is to uninstall DeoVR and re-install it.
I hope this gets repaired quickly. Maybe I will need to offer to repair their code myself!