Log in doesn't show on iOS browsers but ok on desktop ones

So, I have a project with:

accounts-password
accounts-ui

I have un-imported everything but the {{> loginButtons}} inside main.html
there is no CSS and only one route to /
commented out all packages but:

meteor-base@1.4.0
mongo@1.10.0
tracker@1.2.0
accounts-password
accounts-ui
kadira:flow-router
alanning:roles
kadira:blaze-layout
standard-minifier-css@1.6.0
standard-minifier-js@2.6.0
es5-shim@4.8.0 
ecmascript@0.14.3 
blaze-html-templates

Still the login buttons only appear on the desktop browsers but not on the iOS ones.

You can see it at http://test.admin.comilonas.biz/

If I connect to the development server on local-IP:3000 it works

Any suggestion?

I just tested it with a brand new meteor app. Just added the accounts and roles packages.

It works on all browsers over local but only on desktop browsers over the internet. But not on iOS 13.6

The docker image is abernix/meteord:node-12-base