I have access to three Raspberry Pi’s. Two behave exceptionally well. In Libre Office Write I save and copy and the complete file I am working from pops up, allows me to save to a designated folder within the file, SAVE, SAVE. The 3rd Pi is the devil. A window pops up, looks like MicroSoft window and when I click on save, it disappears. Where can I locate the area to change the SAVE and COPY window?
Not quite sure what you mean by “allows me to save to a designated folder within the file” (without leaving the program??) or “COPY window” (Save a copy??).
But anyway, try changing the dialogs: Tools > Options > General > Use LibreOffice dialogs.