Same case here, I sometimes even forget how to speak my own language.
Also, I think its because some people are more used speaking on their own mother tongue and barely speak english so they arent that good at it.
In a sense, it might be difficult for others but not that much to the rest. reply
okay soooo I failed on my filipino subject but I got 95+ on my oral communication and 21st Century subject(ノಥ,_」ಥ)ノ彡┻━┻. I don't even know why sometimes I'm having a hard time writing an essay in my own mother tongue. And my parents were like ಠ,_」ಠ 1 reply