On internal laptop display I can select just a single resolution in gnome-control-center when running under Wayland. Under X11, I see many different resolutions. However, on external displays, I see different resolutions listed even under Wayland. This really affects only the internal display.

I'm not sure whether this is mutter issue or some other issue, but I could guess no better candidates.

Hardware:
Lenovo Thinkpad T450s
Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz
00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09)

Software:
kernel-4.2.6-300.fc23.x86_64
mutter-3.18.2-1.fc23.x86_64
gnome-shell-3.18.2-2.fc23.x86_64

xrandr under Wayland:
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
XWAYLAND0 connected 1920x1080+0+0 310mm x 170mm
   1920x1080@0.1Hz   0.00*+

xrandr under X11:
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 173mm
   1920x1080     60.05*+
   1400x1050     59.98  
   1600x900      60.00  
   1280x1024     60.02  
   1280x960      60.00  
   1368x768      60.00  
   1280x720      60.00  
   1024x768      60.00  
   1024x576      60.00  
   960x540       60.00  
   800x600       60.32    56.25  
   864x486       60.00  
   640x480       59.94  
   720x405       60.00  
   640x360       60.00  
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)