Cannot copy and paste text from one page to another

For some reason i can no longer copy and paste text from one page to another properly.

I write the text out as normal (not using a text box) but when i copy and then try to past to another page it then does several other things.

It changes the font and cap height, puts it onto a text box and centres it on the page?

Why???

If i copy and paste text along with an object (say a simple box) everything copies and pastes perfectly, just not text on its own