[Bug] Cursor up/down moves to different offsets

[Xazin]

Description: When using arrow up and down to navigate, I'd assume the cursor position takes a logical decision on moving directly up to the same offset on the path above, this however is not how it works.

The way it currently works, mean that sometimes when being at offset 7 on path 1, when moving up it would go to offset 8 on path 0.

I'd expect the traversel to simply be --path, with same offset (if possible, otherwise end of node).

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