I have a same project in trax2D there I was able to add a table on for my track layout.
Also track height is not working ( I assume this is because the table ( ground level ) is not there.
When I add a height, the whole trackplan gets that heigt ... In trax2D I could add a height per track item.
So I have 2 issues, but I don't know if one is related to the other one. Could you please have a look at it, or maybe I am doing something wrong?