topic Lasso Selection and Rectangle Selection not tracking mouse in ArcGIS JavaScript Maps SDK Questions

Lasso Selection and Rectangle Selection not tracking mouse

AndrewMurdoch1 — Wed, 11 Mar 2026 17:48:34 GMT

Good Day

I just upgrade to ArcGIS Core 4.34.8 and now my mouse isn't tracking with the Lasso or Rectangular Selection Tool. When I select them and start to draw, the area is pinned into the top left of the map. I saw this behaviour first with the SketchWidget, so figured it was a deprecation issue, but I see the issue with the web component.

(view in My Videos)

Do you have any idea how to fix this?

Thanks

Re: Lasso Selection and Rectangle Selection not tracking mouse

AndrewMurdoch1 — Thu, 12 Mar 2026 18:12:59 GMT

Fixed it, I had

@import "https://js.arcgis.com/4.20/@arcgis/core/assets/esri/themes/light/main.css";

In my map CSS, changed it to:

@import "https://js.arcgis.com/4.30/@arcgis/core/assets/esri/themes/light/main.css";

And it's fine now, so if you run into this, please make that change if you want to keep your sanity.