@maurizio I’m on Gnome now but used XFCE as well. You have to go into the keyboard or language settings to change it global or per applications. With global your keyboard layout will apply for everything. Per apps logically every app will have their actual settings you have set.
This setting maybe available with right click menu on the panel layout switcher plugin.
if you can’t see that you have to add it manually to the panel.
Hope it helps.
"It also appears to be packaged in .deb and .rpm formats only, which adds in the possibility of something going wrong when trying to convert and install it on an Antergos system."
You can use pamac to install lightworks. It is in AUR. The new version 14 is available now. Wich makes usage more easy.
@WaltH I did use Kdenlive on gnome as well. It works fine but the playback is slow if you use many effects.
Now I try to learn Lightworks as it is a professional video editor but takes time to get used to it.
The free version has a limit to 720p video. But that is ok for me. It works smoother than Kdenlive as I started to use it.