Add/Edit Citation screen problems
Just using the new 64-bit Zotero. When I open the add/edit citation screen it defaults to a wide but thin window. It does not go back to its previous size/shape as the old version did. Also, the field for the page/etc at the bottom of the window floats about at the middle, rather than to the right as before. These are small, but annoying, changes.
https://s3.amazonaws.com/zotero.org/images/forums/u480484/plsd0fzdalsvg4z6noto.png
https://s3.amazonaws.com/zotero.org/images/forums/u480484/plsd0fzdalsvg4z6noto.png
You can paste into the text fields with Ctrl-V, as in any application.
In any case, the classic citation dialog is mostly not receiving any further development. I'd recommend switching to the default citation dialog. You can now select items in the main Zotero window before clicking Add/Edit Citation and they'll be preselected in the citation dialog.