latest master build with lucid crashes

[A.I.]

I'm running emacs build from master (74c07733698b95eb455edcafab8634a700a3194f).
system-configuration-options is "--with-x-toolkit=lucid".

I can reliably reproduce this issue on my desktop running i3 on X11.

1. run emacs with "emacs -Q"
2. M-x server-start
3. opens a terminal emulator and make it full screen (which covers the
emacs frame)
4. run "emacsclient -c"
5. emacs crashes

Here is a backtrace I got from gdb: https://pastebin.com/fCn7J5NQ

--
Thanks.
Merrick Luo