Hi, thank you for your response.
We are not using the newly introduced sketch widget, but draw and draw action.
We are creating draw actions and have a function that is called on several events:
action.on("vertex-add", redrawPolyline);
action.on("vertex-remove", redrawPolyline);
action.on("cursor-update", redrawPolyline);
action.on("draw-complete", redrawPolyline);
We created and used these actions since upgrading to the 4.x api and now the behavior is broken, even without text.
Our implementation is very simillar to the first example in Draw | API Reference | ArcGIS API for JavaScript 4.10 .
I coulndn't find an example for drawing a graphic in a GraphicsLayer | API Reference | ArcGIS API for JavaScript 4.10 , so it might have something to do with on the fly re-rendering of graphicsLayer.
Thanks for the hittest check.
I'll try creating a sandbox, if I won't be able to, we'll send you a link to a working sandbox of our system.