Urgent Support Needed: XML code in Post

Hi All,

My website focuses on writing content about coding, mostly related to XML.

When I post XML content in a new post, everything looks good. However, when editing the post, the XML content is getting lost. How can I ensure it is retained?

I am struggling with this issue and would greatly appreciate any help. Any suggestions are much appreciated.

1) Fresh New Post - Adding xml in paragraph and in code block - It keeps structure as is - this is good.

2) When post is edited - xml structure is getting lost.

Thanks,