Left/right keyboard navigation not working correctly

[tomatic]

Navigating left or right from the current node doesn't work correctly. In the attached screen recording, I'm repeatedly pressing the right arrow, but Minder is only jumping between the main and the left node. Same happens when using the L key.

The only way I can navigate to the right node is by first going to the left one and then pressing N or P.

Minder v1.16.4 on Kubuntu 24.04.

https://github.com/user-attachments/assets/2187fd59-676a-49bf-946d-7d568b8ed474