Stuck in listener.accept

[unia909]

I'm using KDE Plasma 6 Wayland. When I run the examples "compositor" and "seat" the program freezes and nothing happens. But the minimal example works fine and shows windows. Below are the last lines of strace before hanging.

memfd_create("smithay-keymap", MFD_CLOEXEC|MFD_ALLOW_SEALING) = 4
write(4, "xkb_keymap {\nxkb_keycodes \"(unna"..., 64756) = 64756
lseek(4, 0, SEEK_SET)                   = 0
fcntl(4, F_ADD_SEALS, F_SEAL_SEAL|F_SEAL_SHRINK|F_SEAL_GROW|F_SEAL_WRITE) = 0
openat(AT_FDCWD, "/run/user/1000/wayland-5.lock", O_RDWR|O_CREAT|O_CLOEXEC, 0660) = 5
flock(5, LOCK_EX|LOCK_NB)               = 0
statx(5, "", AT_STATX_SYNC_AS_STAT|AT_EMPTY_PATH, STATX_ALL, {stx_mask=STATX_ALL|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFREG|0640, stx_size=0, ...}) = 0
statx(AT_FDCWD, "/run/user/1000/wayland-5.lock", AT_STATX_SYNC_AS_STAT, STATX_ALL, {stx_mask=STATX_ALL|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFREG|0640, stx_size=0, ...}) = 0
statx(AT_FDCWD, "/run/user/1000/wayland-5", AT_STATX_SYNC_AS_STAT, STATX_ALL, {stx_mask=STATX_ALL|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFSOCK|0755, stx_size=0, ...}) = 0
unlink("/run/user/1000/wayland-5")      = 0
socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0) = 6
bind(6, {sa_family=AF_UNIX, sun_path="/run/user/1000/wayland-5"}, 27) = 0
listen(6, -1)                           = 0
ioctl(6, FIONBIO, [1])                  = 0
accept4(6, 0x7ffc44897910, [110], SOCK_CLOEXEC) = -1 EAGAIN (Ресурс временно недоступен)
epoll_wait(3, [], 32, 0)                = 0
accept4(6, 0x7ffc44897910, [110], SOCK_CLOEXEC) = -1 EAGAIN (Ресурс временно недоступен)
epoll_wait(3, [], 32, 0)                = 0
... stuck forever