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I loaded the following multipart polygon in QGIS which consists of three separate polygons. The highlighted (yellow) polygon consists of the bigger upper part and the smaller lower part.

QGIS screenshot

My aim is to render the same multipart polygon in an Android app. Therefore, I extract the points of each polygon. Then I render the coordinates (latitude, longitude) in the app.

However, the Android rendering shows up with an error as shown in the following screenshot:

Android screenshot

It looks like there is a false connection between two points. I cannot see this line in QGIS - neither in the polygon nor in the points layer.

Is there any way I can detect this error in QGIS and fix it?

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