Thank you. I can see the problem is no longer occurring on the post you mentioned. It's also gone when I try editing the original form where I discovered the problem. I did not follow your explanation for the cause of this problem. I'd like to understand the cause so I can avoid this in the future. From what I can see the code in the original post form where I first spotted this problem has not changed. I don't understand when you said " the issue is when you arranged the meta boxes displayed with the form in different order we see the issue."
" the issue is when you arranged the meta boxes displayed with the form in different order we see the issue."
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Meta boxes are the different sections you see on your edit post form like Form Editor, Settings, Access Control etc..etc..
You do not have to worry about it as the fix will be added for this issue in near future release.