I just played an 18 hole round and every keybinding worked every time.
I just did the same (WGT weekly 18-hole single play tournament @ EH) and I didn't have any problems with the keybindings.
Maybe it's just a sporadic problem. Or maybe it depends on what course you play and/or whether you're playing a solo round or a multi-player round. Like I said in another thread, the keybinding problem was there last night when 4 of us played a multi-player stroke play round @ Kiawah B9.
EDIT: Just tried playing a solo stroke-play round on Wolf Creek F9. All keybindings worked on the 1st tee. After my tee shot (2nd shot), none of my keybindings would work. Maybe this will help WGT figure out the problem.
EDIT #2: Just played a 2-player stroke-play round on Kiawah F9 and a 3-player stroke-play round on Olympic B9. Keybindings did not work at all, on any hole.