Appreciate that, however I don’t think it’s worth any more time or effort. The plugin causing the issue was a) rather obscure, and b) actually one that should not have been currently enabled as it was a helper plugin to some other theme; a leftover from the prior development group managing the site. It should therefore never be one to be installed/activated while using your Azuma theme.
Thanks again for the great support!
Yes, an unknown conflict (with no logged console errors) with a plugin seems to be the culprit.
Thanks for the advice! Cheers!