I have an Experience Builder app that has a mobile version. In the mobile view, one tab has map views, the other tab has links.
On my Android work phone running Chrome, the map tools for layers and basemap blink out of existence as soon as I open the app. On my personal phone they do not. Both phones are set for the default screen resolution size.
When I change the resolution on my work phone the tools appear and are usable. I feel that the map tools should adjust their position in the map to be usable despite the screen resolution, and especially should be configured to be visible in the default screen resolution for Chrome on Android.