Sign in page blank while using self signed SSL

[JartySharky]

Hey,

I use NextCloud locally and thus so far only with http.
As Yaga needs https to connect, I installed a self-signed SSL certificate.
When entering the https server adress, Yaga asks whether I trust the connection as the certificate is untrusted and I say yes.

In the next step the sign in page opens, but is only white with no content.
In other apps like Nextcloud Fotos it is working, but I'd really like to try Yaga.

Is it a problem with WebView or is there a possibility for me to use Yaga with my self signed SSL? For real SSL I would need a domain, DNS etc.

[Nationalgeographic]

Same to me.

[vauvenal5]

Is the same behavior given when using the sign in over browser option?