I can reproduce but i'm able to use the good TWIG template by using this : subentity--<subentity-machine-name>.html.twig
If i have a specific display mode, i can also use : subentity--<subentity-machine-name>--<display-mode-machine-name>.html.twig
Example :
- if my subentity id is "tab_homepage", i can use subentity--tab-homepage.html.twig
- if my subentity id is "tab_homepage" and use the display mode id "header_top", i can use subentity--tab-homepage--header-top.html.twig
Maybe it can help waiting for a patch.
Is it possible to create a new release version compatible with Drupal 10 ?
Thanks in advance.