I upgraded to 188.8.131.52 on Ubuntu 18.10 this morning. Now the Special Characters (or special sorts, as we call them in the trade) aren’t available. The ‘favourite characters’ appear in a pop-up window - none of which I use particularly often. When I click the ‘more characters’ button, this is what I get.
I use the special sorts constantly in my work. I will have to uninstall the latest version and revert to the stable release. Please notify me when this bug is rectified, so I can continue working. (This has cost me £30 in lost working time today, incidentally.)