Do not know if there was a automatic update of ST3, but following the last W10 update (installed tonight), AltGr stopped working properly in ST3.
I need to use AltGr to type character such as #, [], {}, which are quite important in programmation. However, it is now switching to another file.
Tinkering a bit in the keymap show that the effect I see is the one caused by Alt+1-9, select_by_index 1-9.
So it seems AltGr is now interpreted as Alt, which is really a pain to type. It’s a bit sad when I finally brought the license less than two weeks ago, after using it for a big part of my scholarship flawlessly.
Mapping Alt+1-9 to noop just cancel the effect, but type nothing, which is still not what I need.
French layout (Azerty), W10, Sublime Text 3 build 3126.