Are you getting any errors when clicking save?
No Error, it says on a small popup [post updated (view)]
Have you tried removing all of your custom functions? There is a few from what I can see.
it works well before this, havent try it to avoid affecting other post. Will look into it as one of the last option.
If the issue still exists without any custom functions or any other plugins activated, can you activate a twenty series WP theme to test?
i do try with twenty twenty theme, it say the same… save, but once i view it, it does not update.
Will continue to try later once am back from work.
Cheers and thanks for the respond!