https://bugs.winehq.org/show_bug.cgi?id=18289
--- Comment #10 from Austin English austinenglish@gmail.com --- (In reply to Mantas Kriaučiūnas from comment #8)
It seems this issue is fixed in WINE 1.6 (tested on Ubuntu 12.04.3 with latest X.org and Linux kernel 3.8) - key 9 from main keyboard behaves correctly in Wine even if Lithuanian (lt) keyboard layout is active in X Window system. I will do additional tests with older (and newer) Xorg next month and mark this bug as fixed if Lithuanian keyboard will work correctly.
Reported fixed.