Phpstorm hotkeys work only on one input source

I'm encountering a problem when using Phpstorm IDE on Ubuntu.

While there's two input sources enabled on my system: English and Arabic, hotkeys work just fine when English is chosen, but when I switch to Arabic, hotkeys stop working. so I've to switch to English every time I want to use hotkeys and this is frustrated. 

Some information:

PhpStorm 2016.2.1

Build #PS-162.1889.1, built on August 23, 2016

JRE: 1.8.0_76-release-b216 amd64

JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o

System: Ubuntu 14.04 64-bit.