I’ve tried the z5 original game in Lectrote and two different Windows based browsers using the Parchment mini site that I’m using to create the app: no displaying problems, as the screenshots below illustrate.
Lectrote:
Chrome:
Edge:
However, this is what I get (so far) on an android phone:
In case it may shed some light on the problem, I’m including a .ZIP with the mini site that uses Parchment and the config.xml file which are then used to build the android apk.
android.zip (458.4 KB)