I'm hoping someone can help me with this -
When I move my text frame around the page, the text within it moves around the frame. When I select and drag the box, the text inside blinks on and off.
This only started happening suddently when I created new text frames. The existing text frames in the document don't do this. I tried comparing the text frame options of the new and exisiting frames and nothing appears to be different.
It sounds as if your new text frames are set to "Align to Baseline Grid" - take a look at the bottom right-hand corner of the paragraph panel when you have one of the problems text frames selected. It's possible that you inadvertently clicked on the "Align" button with nothing selected, thus making that the default option for new text frames.