I posted a fix for the Bitmap Fonts plugin on Linux here, it had to do with case-sensitivity. Not sure if the plugin is web-compatible but as far as I'm seeing it's not using Node APIs so it should be fine with applied patches on the web version as well.
The loading screen was used, it's just that the files loaded too fast locally. I managed to get it to show up after having to preload the bitmap font on Linux.
Nice work!
I meant unused in the sense of "you wouldn't see this by playing the game normally", but that's interesting to know. And thanks for linking to your fix to the plugin, after applying it the game gave an error about "require" not being defined which I'm pretty sure is a sign that it is using Node APIs. So I guess we're back to having the font disabled for now :/
I wonder how didn't I notice that. Anyways, I ran the port offline, hacked into the Bitmap Fonts plugin like this, enabled it and moved the JSON files from the fonts/Bitmap Fonts/GameFont folder to the data folder and the game loaded the bitmap font fine, so you could try doing that.
Also, you should probably add a note about the offline index.html not being able to load files from the file system unless Chrome was launched with a specific flag or unless a local web server was set up. (At least it wasn't able to for me.)
