When ACF plugin Fields value Update With Gutenberg editor then the preview of page is not working and they not showing any value on-page.

This is a know issue when using the new editor. Custom fields are not submitted unless you “Update”, just entering the info into the field won’t do anything for you.
Hi @hube2
Is this bug fixed with the latest version of WordPress (5.5)?
Or do you work on it?
Thanks
I am not the developer, just another user. As far as I know this is still an issue and will likely be an issue for some time.
As far as I know some users have this and other problems wen Gutenberg PLUGIN is activated. Do You have it activated?
Thanks @hube2 . I’m sorry for the confusion.
@uxbox No. I just use the regular editor on WordPress 5.4. Most of my fields in this project are Flexible.