Adding multiple polylines to a Map messes up existing polyline

[SupermindPT]

Description

Im using a Microsoft.Maui.Controls.Maps.Map control to display routes to the user. I draw polylines based on the current user location, so as the user is moving I change the polyline accordingly.

When adding a new polyline to the map when another already exists, causes the existing polyline to change unexpectedly.
As you can see in the image, as soon as a new polyline is added to the map, the existing one changes unexpectedly.

The existing polyline becomes incorrect, one points is connected to two or more points of the polyline.

The last point of the polyline should be connected to the point before (n-1) only, but points are connected unexpectedly.
I can replicate this issue with emulator and physical device, and it seems that upon redrawing the MapElements (reloading the page) the polyline is fixed.

Steps to Reproduce

1. Create a new .NET MAUI project.
2. Create a page with a Map control from the Microsoft.Maui.Controls.Maps.Map namespace.
3. Add a polyline to the map
4. Add another polyline to the map
5. The first polyline is now messed up.

Link to public reproduction project repository

No response

Version with bug

8.0.40 SR5

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android 21 and up

Did you find any workaround?

I have not found any workaround yet, but it seems that reloading the page and consequently the Map control, will draw the polylines correctly.

Relevant log output

No response

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[SupermindPT]

I figured out a fix incase someone has the same problem. Before adding a new polyline to the map, just invoke:

existingPolyline.Handler.DisconectHandler();

on the already existing polyline. This will prevent further changes to the existing polyline, and there is not need to create a custom handler for the polyline.