Yes! I can confirm there are many issues in new Libreoffice 5, which I see also in my system (Debian Stable, Gnome, AMD64).
I have already post this bug report: https://lists.debian.org/debian-backports/2015/09/msg00044.html There are also other issues, lots of other issues. For example, issues in rendering, especially in Calc; in Writer, the menu of undo/redo buttons in toolbar doesn't appear... Cleaning the profile in $HOME/.config *doesn't* solve my issues. I am seriously considering to downgrade to the previous version of LO in backports. Best regards, Domenico