Thank you for your feedback. I am aware of some of the issues affecting mobile browsers, but due to the inherent difference between mobile and desktop apps, as well as technical limitations of mobile browsers, I am not planning on supporting these devices in the near future.
The voicebanks up for testing are CV only, so the note [a ら] should indeed fail to render.
Ah, okay. I noticed that with Pandalolli's UST before looking at your reply. If you still need anything from me, like my bank, I'll be happy to help.