Custom layer causes map to go blank, irreversibly

[adam-lab]

Hello. I came across a potentially frustrating interface issue. The map went blank when I selected "Global - Wikimedia map" from the "Add Custom Layer" box. The screen remained blank after clicking the "x" on the Map layer,

I eventually discovered that this can be corrected by clicking on another layer (e.g Basic Maptiler). But before stumbling on that solution, I made several failed attempts at recovering the map. For instance, I tried reloading the page, navigating back to the base URL (i.e. https://osmapp.org/, rather than https://osmapp.org/#17.00/52.3752/9.7379), and opening OSMApp a new tab -- none of these caused the map to display. However, switching to a 'private window' (Firefox) allowed me to see the page.

I think that the expected behavior would be for layer selection to revert to "Basic Maptiler" after a custom layer is closed by clicking on the 'x'

I observed this behavior using Firefox and Chrome.

p.s. Thanks for providing this service. It's a great improvement on the other options.