Chaining multiple child tables break UI

I have a child table that contains a child table. When I try to create it from parent (table type field) UI, “edit” button breaks and does not work

Full error message:

Removing the child table from inside other child table solves the problem. But thats not something I can afford. What should I do?

I didn’t think it was possible nest child tables :thinking: I wanted to do this when I first started developing my ERP and was warned against it.

well, there is no error when you do that via web UI. If thats illegal - they should at least diplay a warning and refuse to perform such thing