Hi Becky for the paragraph you have two choices
1/ for the paragraphs left right margin set them to auto then center align the paragraph text if you want that centering also
2 set the container/column whatever is holding the paragraph to left right margin to auto, then center align the text if you want that centering.
as for the jumping to the top thingy,, It often happens with me also (particularly with Model Windows,,, ) You should maybe try raising that with CC Support It might be a bug or it could be something amis with your app and needs re-loading
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