Hi, all.
I found such condition in xcursor/builtin.mk -
[...]
.if defined(USE_BUILTIN.Xfixes) && !empty(USE_BUILTIN.Xfixes:M[nN][oO])
USE_BUILTIN.xcursor=	no
.endif
[...]
Is there anyone know the reason?

I used native Xfree on NetBSD and we don't have native Xfixes. We have to
install it from pkgsrc and that condition is always be true.
I set USE_BUILTIN.xcursor=yes in /etc/mk.conf, then it will get the strange
result when we have Xfixes and xcursor in the same time(e.g. gtk2).
This is also the cause of PR 32317. After I comment those three lines, it
fixes the problem.

-- 
À la guerre comme à la guerre!