Language Hotkeys removed by itself in Windows 10
I finally found the solution and I am posting, in case someone else has the problem.
1- Define your hot-keys.
2- Search and find the "region" settings palette and go to administrative tab.
Now go to "Copy Settings" section.
Select both tick boxes below the window and press ok.
In my case this applied the settings in a way that they are no more removed.
Edit: In case you cannot find the language Hot-key definition in windows 10, in the latest editions, it is here: