I have an issue with quick parts where by it is losing the fonts size, and on occasion the paragraph brakes. This happes intermitently so it is hard to find the exact problem,
This is the process is follow to save the quick part.
1) Type the block of text i wish to save with the correct font, font size and line breaks etc.
2) hilight the text. Insert> Quick Parts > Save selection to quick Part gallery
3) Change the save in Option to Normal ( this is for the purpose that the quick parts are saved in the normal.dotx template and it can be copied to multiple machines) Select the option Insert Content in its own paragrah.
This issue happens on the original machine the Quick Part was created on and also other machines all with the latest version of office installed and all the updates for both office and the OS