https://bugs.winehq.org/show_bug.cgi?id=52674 --- Comment #3 from adolfotregosa(a)gmail.com --- I Think I managed to track it down with regression: 0044b02d482fa19f6d1ddebc4b716efeba287d44 is the first bad commit commit 0044b02d482fa19f6d1ddebc4b716efeba287d44 Author: Jacek Caban <jacek(a)codeweavers.com> Date: Mon Mar 7 14:41:53 2022 +0100 user32: Use UNICODE_STRING for passing window classes internally. Signed-off-by: Jacek Caban <jacek(a)codeweavers.com> Signed-off-by: Huw Davies <huw(a)codeweavers.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> dlls/user32/class.c | 162 +++++++++++++++++++++++++++---------------------- dlls/user32/controls.h | 2 +- dlls/user32/win.c | 24 ++++++-- 3 files changed, 109 insertions(+), 79 deletions(-) -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.