My build environment is an Ubuntu 24.04 VM.

Turns out I wasn’t running npm install in my build script, but that also apparently isn’t the issue: building after an npm install results in an equally broken (i.e. iconless) build as without it.

I’ll attach an output log from the npm install part. It at least mentions postinstall.sh.

npm-install.log

I don’t know; depends on whether it is run as part of the documented npm run build:android build command, which is what I’m using.