Thanks Daniel.

I found the problem. It was unseen (background) formatting, transferred over from a Word document that I had copied and pasted into the X5 text object.

Although I "cleared" all text formatting in the Word document itself, before I copied and pasted it into X5 (and used the X5 "Reset Format" function in the text object to make sure I cleared all formatting), neither worked for some reason.

In order to discover the problem, I had to create another page and move all the objects across to the new page.

Because the problem still transferred to the new page, I then began deleting each object in turn: blog object, image objects, separator, social share. No object caused the problem.

So, I narrowed it down to the text, placing my cursor between the blocks of text throughout the document and discoved invisible formatting that was leftover from the Word document.

I deleted it manually and hey presto, the page was back to normal.

The irregular formatting was making the page wider (but not visibly) and created a scroll bar at the bottom to accomodate the invisible formatting. That was why the page moved.

So everything is fine now.

A good tip when text is copied into the X5-textobject:

Copy the text from a document or the web or from elsewhere - then - insert the text into notapad++ - then copy the text from notepad++ into the X5.

This will never give you trouble with fonts, formatting or "hidden" code.

All formatting is cleared when text is inserted in notepad - and you need not to save the text.

Just open notepad++ - insert the text - and then copy the text from notepad and insert it in X5.

It will then be as if you typed it in X5. Clean and easy.