React-router does not render anything if routes are changed in render() - reactjs

Question

For some reason, my routes only render half the time - seems like a race condition of some sort. It'll print out the "OK" but nothing from the routes, not even the 404. Pretty clear cut.
If I remove the loading bit it'll always render the switch block as intended.
Is there a better / different way to do this?
v4.2.0
render() {
const { hasInitialized } = this.props;
if (!hasInitialized) {
return (
<div>Loading...</div>
);
}
return (
<div style={{ height: '100%', width: '100%' }}>
<Helmet titleTemplate="%s - Resilient" defaultTitle="Resilient" />
<div>OK</div>
<Switch>
<Redirect from="/" to="/auth/check" exact={true} />
<Route path="/auth" component={AuthLayout} />
<AuthenticatedRoute path="/x" component={AdminLayout} />
<Route component={Miss404} />
</Switch>
</div>
);
}
https://github.com/ReactTraining/react-router/issues/5621

Answer 1

I read the react-router docs many times, and the part about Blocked Updates seems relevant. But, when I put a debugger line in <Layout />, location and history always have the right info, and still, none of the routes would render.
I still don't understand what the issue was, but here's the workaround I came up with. The code below wraps my <Layout /> component, which contains all the routes.
import React, { Component } from 'react';
import { connect } from 'react-redux';
import { withRouter } from 'react-router-dom';
import LocalStorageManager from 'utils/LocalStorageManager';
import { selectCurrentUser, selectHasInitialized } from 'client/selectors/authSelectors';
import { setAccessToken, getProfile } from 'shared/api';
import { setHasInitialized, signIn } from 'modules/auth/actions.js';
import SinglePageCard from 'components/layout/SinglePageCard';
const mapStateToProps = (state) => {
return {
currentUser: selectCurrentUser(state),
hasInitialized: selectHasInitialized(state),
};
};
export default (WrappedComponent) => {
class Layout extends Component {
componentWillMount() {
const accessToken = LocalStorageManager.getAccessToken();
if (!accessToken) {
this.props.setHasInitialized();
return;
}
setAccessToken(accessToken);
getProfile().then((response) => {
console.log(response);
const { user } = response.data.data;
this.props.signIn(user);
}).catch((error) => {
console.log(error);
this.props.setHasInitialized();
});
}
render() {
const { currentUser, hasInitialized, ...rest } = this.props;
if (!hasInitialized) {
return (
<SinglePageCard>
<div>Initializing...</div>
</SinglePageCard>
);
}
return (
<WrappedComponent {...rest} />
);
}
}
return withRouter(connect(mapStateToProps, { setHasInitialized, signIn })(Layout));
};