Intermittent error on callback webpage during OIDC CLI authentication

I have strange issue: when I’m using OIDC CLI authentication, occasionally instead of normal callback page with “Signed in via your OIDC provider” occurres blank page with vault icon or even page with " Can’t access site" error. But in all of this cases everything works fine! Connection to Vault established, authentication passed and I can normaly retrieve secrets.
But I think, that this unstable callback page isn’t something right and it’s need to be solved