My app is developed under ubuntu/KDE and I was using old SDL 2.0.10 that ships by default.
Yesterday I just tried to install SDL 2.0.20 from the website, out of curiosity. Everything seems to work, except
that my event loop is now filled with many SDL_KEYMAPCHANGED events. I never had these ones before.
More specifically, I get one when I click on the window top bar, and most curiously, I get loads of them when my SDL window is not focused and I use my mouse elsewhere on my desktop. For instance scrolling the terminal with mouse wheel will generate a bunch of SDL_KEYMAPCHANGED on my (supposedly) inactive SDL window...