Seeing the active cell in Calc easily

My Ubuntu Libreoffice Calc no longer bounds the active cell in a highlighted box.
It just puts a small dot at the bottom right corner of the active cell.
How do I restore the usual cell outline to see the active cell please?

Sometimes LO fails to display the cursor while in edit mode. Closing (include the Quickstarter) & reopening LO fixes the problem. And/or logout / login. And/or restart.

Can you please post your complete LibreOffice version (with Build, Kernel, Locale and all) as well as your video card model (you can take it from lspci -v and the exact numbers from lspci -n) and your video driver (also from lspci -v) please?

I had the same problem too and it turned out that I had a driver issue on my system. I was using modesetting+vesa+fbdev but my X.org intel driver was missing. Reinstalling the xserver-xorg-video-intel driver helped. You can find further information in a bug I raised against LibreOffice, where other testers couldn’t reproduce the problem:

https://bugs.documentfoundation.org/show_bug.cgi?id=99705

sudo apt-get install xserver-xorg-video-intel

worked for me. I did have to reboot; then I got the active cell outline back. Very happy!

(Linux Mint 18)