Null in window.wp.data.select(‘core/editor’)

Hi guys,

we are developers of the theme TheGem. We are facing the following issue:
in blog post page options (classic editor mode) when your plugin is active window.wp.data.select(‘core/editor’) always returns null. We use window.wp.data.select(‘core/editor’) in order to read/write the format and the excerpt of the blog post in this way:

window.wp.data.select(‘core/editor’).getEditedPostAttribute(‘excerpt’);
window.wp.data.dispatch( ‘core/editor’ ).editPost( { excerpt: value } );
window.wp.data.select(‘core/editor’).getEditedPostAttribute(‘format’);
window.wp.data.dispatch( ‘core/editor’).editPost({format: value });

Please check the link and access in “Sensitive data”. The question is: why window.wp.data.select(‘core/editor’) is returning null when your plugin is active? Would you be so kind to look into this issue?

Thank you!
Gregor