Background gray in firefox but works on Chrome and Edge

[nuukcillo]

With this configuration, when I try to print, it works perfectly on Chromium-based browsers, but in Firefox, I always get a gray background.

const map = L.map('map').setView([39.5, -0.45], 8.5);

const tileLayer = L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
    attribution: '© OpenStreetMap contributors'
}).addTo(map);

L.easyPrint({
    sizeModes: ['Current', 'A4Landscape', 'A4Portrait'],
    filename: 'mapa_meteo',
    exportOnly: true,
    hideControlContainer: true,
    tileWait: 20000,
    tileLayer: tileLayer,
}).addTo(map);

// Here I load a GeoJson with data

Example images

Chrome:

Firefox:

I've tried printMap() method and using dom-to-img with similar results.

[ramirez]

I'm seeing the same problem.