Upgraded to latest release 4.1.1 and now get this errors. See image.
Going back to 4.0.1 and error goes away.

@dolphinsd Could you provide repo of reproduction?
Same error reported above and since 4.1.1
Same issue, happening only when menu item of dropdown contains routerLink to another view.
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Same issue, happening only when menu item of dropdown contains routerLink to another view.