can't use Shift+Super+9 or Shift+Super+0 as a shortcut

Submitted by Mikel Ward

Assigned to Olivier Fourdan @olivier

Link to original bug (#16660)

Description

If I set a keyboard for any window manager action to Shift+Super+( or Shift+Super+), pressing that keyboard shortcut has no effect.

Shift+Super+* (a.k.a. Shift+Super+8) and other numbers appears to work fine.

In xev, I notice one difference is an extra line for XKeysymToKeycode. Is XKeysymToKeycode handled specially somehow?

KeyPress event, serial 37, synthetic NO, window 0x6200001,
    root 0x1da, subw 0x0, time 149151887, (453,177), root:(1644,820),
    state 0x41, keycode 18 (keysym 0x28, parenleft), same_screen YES,
    XKeysymToKeycode returns keycode: 187
    XLookupString gives 1 bytes: (28) "("
    XmbLookupString gives 1 bytes: (28) "("
    XFilterEvent returns: False

Version: 4.14.0