We are using SP2013 on-premise. Publishing infrastructure is enabled in a site collection.
Recently we need to move all pages (*.aspx files under /Pages/ library) from root site to a subsite in same site collection. So we use the tool at Site Settings -> Mange Content and Structure, select the pages and then "Move" to subsite.
We have customized page layout named "HomePagelayout.aspx". The moved pages are still referring this layout. The layout contains several RichHtmlField. Now all the content (rich html code) are displaying
(e.g. <table width="100%" class="home-contentbox-title" cellspacing="0" cellpadding="0" style="height: 32px;"><tbody><tr><td><span id="ms-rterangecursor-start" rtenodeid="1"></span>)
When we "Edit" the page (change to edit mode) the display are completely alright. The html codes are rendering correctly. However when we "Save" (change back to viewer mode) the display are messed up.
We have tested create new pages at root site's Pages library and the result is good. Test created in subsite Pages library, the display are messed up.
What could be the issue. Did I missed anything?