rexrainbow I'm not experienced in how plugins work exactly, but I wonder if you could look into the latest Ejecta wrapper. I'ts a really really nice iOS wrapper, however rex_tagtext seems to simply not work. I believe Ejecta is going to gain more popularity as CocoonJS seems to not updat
When I tested it, using a typewriter effect, I noticed that it did work in terms of masking the <class> type stuff as the type writer effect typed out in real time (i had to increase the type text speed to mask the brief time you could actually see the <class> stuff appear, but when the <end> part appears the other side the <stuff> would vanish but the text in between would still not appear bold and/or italics.
This same plugin ran through a browser shows the text fine. So it just seems like for whatever reason, using Ejecta ignores the bold / italics request