Using Samsung Galaxy Z Fold 2, both in cover screen and in inner screen.
After using the application for a while (either playing a match or browsing around the menus) all text in the settings becomes invisible. Both the main settings menu and the inner Gameplay and Audio menus.
When restarted, the text is visible again, and then stops being visible after using the app for a while.
The language chooser's items seem unaffected, but only when it's openez.