https://bugs.winehq.org/show_bug.cgi?id=38479
--- Comment #1 from teru ktmizugaki+wine@gmail.com --- im sorry, failed to input comment correctly...let me try again.
TAB_SetCurFocus function in dlls/comctl32/tab.c ignores the result of TCN_SELCHANGING and change selection and focus unconditionally. it doesn't look correct to me.