Hi there!
I've installed the 4.1.8 version both on my desktop and my notebook. But for some reason marking with ctrl space doesn't work properly on my notebook. I have to press ctrl space + click with my cursor + press any key, like space, or enter. After doing this, the mark is promptly put, but otherwise, it isn't. The problem is that I have to use my mouse every time I want to put a mark, which definitely makes coding slower, and a bit annoying. The hotkey configuration is as it comes when installing it.
Does this happen with anyone else?