LibreOffice Print Dialog outside screen area, so no actions buttons visible. XFCE

Unable to print from print dialogue in our openSUSE LEAP 15.1 using XFCE and LibreOffice on various laptops. LibreOffice Version: Build ID: 40(Build:2)
CPU threads: 4; OS: Linux 4.12; UI render: default; VCL: gtk3;
Locale: en-GB (en_GB.UTF-8); UI-Language: en-GB
Calc: threaded

Print dialogue pop up has fixed size and bottom with command buttons OK. cancel, Help, etc. is not visible on our laptops, and resizing only changes width.
Older version LibreOffice 6.3.x.x had print dialogue with a scroll bar on right hand side to select area of dialogue to enter data and it always had command buttons visible at bottom.
LibreOffice 6.4.x.x appears to have a fixed size dialogue with no scroll bar activity so bottom of dialogue is off bottom screen and printing cannot be done, even when panel bar is intelligently removed.

How to resolve this?
Any help appreciated.

Not an Xfce user, but try this:
Press Alt+Left mouse button and try to drag the dialogue to the proper place. IIRC Libreoffice remembers the location.