Some useful keyboard shortcuts like M (Mute), A (Aspect Ratio) etc. only work in English input method (Windows' keyboard setting). If a non-English language is selected (Greek for example) they do not work. Combined shortcuts work fine, CTRL-H for example.
Another small issue (not related to language) is that some shortcuts are unavailable when in minimal-view mode. CTRL-P and CTRL-I for example, will not work in minimal interface mode.