Chrome rendering problem - login page for IdentityServer4


I got this strange issue with Chrome when using Vue.js with IdentityServer4.
I deploy Vue.js static files served through .NET Core.

For the latest stable version of Chrome (83.0.4103) in some cases the page is not rendered at all.
JS is working and the DOM tree looks good.
However the page is just empty.

Confirmed on several computers, without any Chrome extensions, both MacOS and Windows.
I couldn’t reconstruct it on Firefox, Safari or Chrome Canary.

Refresh or window resize fix the issue.
Chrome Rendering “Paint flashing” shows some invisible activity in the top left corner

I ask here because I think it’s related to client-side rendering.
How can I diagnose the root cause of the issue?