The bug does happen without this font setting. Traces are as follows:
`emacs`(the bug occurs in this case):
Frame size history of #<frame emacs@a550jk4200 0x11a7420>
FRAME-NOTICE-USER nil ((height . 47) (width . 120) (left . 0) (top . 0))
adjust-frame-size-1 (560 576 840 752) (x-set-frame-parameters 1)
adjust-frame-size-2 (560 576 840 752) (nil nil)
xg-frame-set-char-size-3 (560 576 840 752) (872 781)
xg-frame-resized (560 576 840 752) nil
update-frame-tool-bar nil nil
adjust-frame-size-1 (560 576 560 576) (tool-bar-lines 2)
adjust-frame-size-2 (560 576 560 576) (nil nil)
xg-frame-set-char-size-3 (560 576 560 576) (592 647)
xg-frame-resized (560 576 560 576) nil
adjust-frame-size-1 (560 576 840 752) (change-frame-size 5)
adjust-frame-size-3 (560 576 840 752) (592 576 872 752)
adjust-frame-size-1 (840 752 840 752) (set-window-configuration 1)
`emacs --geometry="120x47"`:
Frame size history of #<frame emacs@a550jk4200 0x11a7470>
FRAME-NOTICE-USER nil ((left . 0) (top . 0))
update-frame-tool-bar nil nil
adjust-frame-size-1 (840 752 840 752) (tool-bar-lines 2)
adjust-frame-size-2 (840 752 840 752) (nil nil)
xg-frame-set-char-size-3 (840 752 840 752) (872 823)
xg-frame-resized (840 752 840 752) nil
adjust-frame-size-1 (840 752 840 752) (set-window-configuration 1)
`emacs .emacs`:
Frame size history of #<frame emacs@a550jk4200 0x11a7420>
FRAME-NOTICE-USER nil ((height . 47) (width . 120) (left . 0) (top . 0))
adjust-frame-size-1 (560 576 840 752) (x-set-frame-parameters 1)
adjust-frame-size-2 (560 576 840 752) (nil nil)
xg-frame-set-char-size-3 (560 576 840 752) (872 781)
xg-frame-resized (560 576 840 752) nil
adjust-frame-size-1 (560 576 840 752) (change-frame-size 5)
adjust-frame-size-3 (560 576 840 752) (592 576 872 752)
update-frame-tool-bar nil nil
adjust-frame-size-1 (840 752 840 752) (tool-bar-lines 2)
adjust-frame-size-2 (840 752 840 752) (nil nil)
xg-frame-set-char-size-3 (840 752 840 752) (872 823)
xg-frame-resized (840 752 840 752) nil
adjust-frame-size-1 (840 752 840 752) (set-window-configuration 1)