Since 1.9, the Alt Gr + '.' combination doesn't work for greater signs with hungarian layouts.
This is due to https://bugs.freedesktop.org/show_bug.cgi?id=28091 and it's based on some kind of "request". I think the original layout was better, it's much more efficient to write XML nodes with Alt Gr + M and '.' then the alternative (Alt Gr + í and y).
If you don't want to revert that commit (since looks like someone actually needs ellipsis), then I think the best way to solve this would be if this would be configurable, and the old layout (i.e. prior 1.9) would be the default, since other systems (like Windows) are handling this keystroke in the same manner.
Adding #28091's reporter to the CC list.
*** This bug has been marked as a duplicate of bug 28091 ***