EXIF in jpeg images

I thought that GL is focused on privacy “by design”. I was wrong. When I upload photo from smartphone, receipient can view gps localization of that photo.
How is it possible?

edit.
The same situation with word/excel files …

Thank you @Mariusz_Jakubowski for your question; Please read my answer here: https://github.com/globaleaks/GlobaLeaks/issues/3138