# Cesium & Webpack Web worker Not updating the viewer

**URL:** <https://community.cesium.com/t/cesium-webpack-web-worker-not-updating-the-viewer/14762>\
**Category:** CesiumJS\
**Created:** [August 9, 2021, 9:41am UTC](https://community.cesium.com/t/cesium-webpack-web-worker-not-updating-the-viewer/14762 "2021-08-09T09:41:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ankit\_Shrivastava](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/ankit_shrivastava/32/4240_2.png) [@Ankit\_Shrivastava](https://community.cesium.com/u/Ankit_Shrivastava)\
**Post date:** [August 9, 2021, 9:41am UTC](https://community.cesium.com/t/cesium-webpack-web-worker-not-updating-the-viewer/14762/1 "2021-08-09T09:41:47Z")

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Hi all,

I am using cesium with webpack which have worker. Earlier i was using “cesium-webpack” in cesium-webpack whenever, I fast forrward timline tick its updating the viewer also, similary as shown in this sandcastle example:  
[https://sandcastle.cesium.com/gallery/CZML%20Polygon%20-%20Intervals%2C%20Availability.html](https://sandcastle.cesium.com/gallery/CZML%20Polygon%20-%20Intervals%2C%20Availability.html)

but in my new cesium with webpack i am not able to do that. means viewer is not updating automatically it updating only when i shake the map.

see the video:

> **[09.08.2021\_15.06.50\_REC](https://screenrec.com/share/tbxnPlaCT2)**
>
> Recorded with ScreenRec

I am using CZML technique to plot my all polygon volume.

Also - i want to draw you attention on entity as well. If i want to change the position of any entity on real time its also not updating the viewer. untill i shake the map. or if i want to update the position on real time i have to tracked those entity only then it was updating otherwise not.

I hope you understand my issue and will revert me back as soon as possible, your response will be appriciated

Thanks & Regards  
Ankit Shrivastav

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**Author:** ![pratiksingh](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/pratiksingh/32/14000_2.png) [@pratiksingh](https://community.cesium.com/u/pratiksingh)\
**Post date:** [October 31, 2023, 6:38am UTC](https://community.cesium.com/t/cesium-webpack-web-worker-not-updating-the-viewer/14762/2 "2023-10-31T06:38:59Z")

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Hi @Ankit_Shrivastava , I am facing the same problem, my viewer is updating after a move or shake the earth. Have you found any solution?