Hungarian keyboard layout problems in insert mode

In Hungarian keyboards certain special characters need to by typed by Alt-Gr (right alt) + <some key>.

One example is the dollar sign which would be AltGr+;
These key combinations works fine outside of FakeVim and inside FakeVim as a matter of fact (but only outside of insert mode).

But once I'm in Insert mode in FakeVim certain AltGr key combinations do strange and unexpected things. The AltGr+; (dollar) key combination, for instance, instead of writing a dollar sign, it moves the cursor to the end of the line and exits Insert mode. The same thing happens by the way if you press Ctrl+Alt+; in Insert Mode. There are also several other Alt+Gr combinations that also trigger different behavior than the expected successful input of the wanted character.

Is it possible that the Ctrl+Alt combinations were always there and the bug only is the fact that Alt+Gr triggers the same things as Ctrl+Alt in Insert mode which they shouldn't?

I haven't tested, but there may be similar problems for other non-US keyboard layouts using Alt+Gr. If so, I believe this is a serious problem for non-US keyboard using Vim users.