I have an issue where the bones of a bone layer don't show when I select a child vector layer of it. Normally they always show, so that when I use the layer bind tool, I can then select the bone to bind the vector layer to it.
When I create a new bone and vector layer inside the project, it works fine.
Is this a bug or is there a way I can fix this?

The bone layer settings:

The vector layer settings:
