> All qt does for displaying web pages is it embeds chromium, same as electron does.
It doesn't:
> WebView is a component for displaying web content which is implemented using native APIs on the platforms where this is available, thus it does not necessarily require including a full web browser stack as part of the application. [0]
Webview is unreliable and not used by electron apps for a reason, you cannot control anything about it. You're stuck with whatever native browser the system has. That's alright for basic things, but hardely what you'd sanely deploy tech that relies upon modern js.