Gmoccapy: EMBED_TAB create double "Y button" in Preview

RIP instalation
master branch

load LCNC with sim configuration:
gmoccapy_with_user_tabs.ini

<img width="1094" height="784" alt="Image" src="https://github.com/user-attachments/assets/dd1bb1b4-8b06-43c4-847c-82f0a0ad1263" />

After comment "EMBED_TAB_LOCATION = ntb_preview" second Y dissapier.