Why is KDevelop not finding templates?

Question

IDE

Decided to try KDevelop. I installed it, open it and click "new project", but there I see very few default templates (only c++/qt and just c++ in the console). There is still a button "Get more templates" which, in theory, should display the templates available for installation, but something does not seem to work - a selection window opens and the inscription "initializing" hangs endlessly there. I waited a long time, but did not wait ... What's the matter?
ps I'm testing on Linux Mint Cinnamon 18.

Answer 1

Block .wrapper, it has overflow:hidden. Remove it and it will work.

Answer 2

caniuse.com/#search=sticky Does
n't work in which browser?