LeafletJS tiles not correct in PWA build

Hello,

I’m trying to make a PWA of an app I’m developing using leafletJS and Geolocation.
When loading the leaflet tiles/map this is what I’m getting:

Any ideas on what’s happening?

This looks correct when exported to http server, but not https. I believe it’s due to something in the pwa settings build. Any ideas?

http://tphangout.com/ionic-3-leaflet-maps-geolocation-markers/

The thing is that it works perfect on iOS and android, just not as pwa