Problem in the renderization for the notation in subtypes relations

[HansMarcus01]

Describe the bug
The Subtype Symbol no render correctly.

To Reproduce
Steps to reproduce the behavior:

1. Create four tables
2. Create a hierarchy between the four tables.
3. see the way the hierarchy symbol is rendered

Expected behavior
To avoid this problem, the symbol should remain static when moving the parent table or some of the child tables. It's recommended to create multiple rows that fit the hierarchy, allowing for greater control over their display.

Screenshots