I lost some list after using Sqrt function

Viz
1

Please see the screenshot of the situation.

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Is there something wrong？

By the way, I can’t find a node that I can use to chamfer/fillet wire. So I’m making one for myself. It is still inconvenient to use because containers don’t work properly in other ones. Is there any node like this?

2

Can you please provide a simple project reproducing the problem?
For now you there isn’t a node available to apply fillet on a wire

3

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When I use mapmutilist as in the screenshot. The lists will lost in some math nodes.
Lost List.zip (4.7 KB)

4

Thanks for the file, we’ll take a look a the problem.