RTE ignoring custom plugins/modules

I have custom plugin/modules in RTE editor for "Language" and "Abbrevation" which are not shown on visual editor RTE (custom styles are working). S. screenshot

<img width="1141" height="369" alt="Image" src="https://github.com/user-attachments/assets/7dd10b55-1748-42a7-83cd-3fcb78e50bf3" />