saskliutas
commented
2 years ago It should be possible to find different categories of the child elements and change visibility, but this won't solve the problem because that would affect visibility of the child elements that are nested under another parent node. That would also cause visibility change of the sibling categories in the categories hierarchy level.
Proper solution required refactor of the ModelsTree. Closing this issue in favor of iTwin/itwinjs-backlog#123
Need to investigate category node visibility handling. There might be situations where element nodes shown in deeper hierarchy levels under some category node are from the different categories. In this case changing category node visibility does not affect those elements.