I have been also waiting for the fix for a long time? Why won't this get fixed?
I ended up using Bluetooth with my Harmony remote. My system is Windows.
Page Up and Page Down work properly now.
No more delay in button presses except for the 6 buttons that either did not work correctly or for missing commands.
I use Flirc for:
Info: MCE results in right arrow key.
Fullscreen: MCE results in window mode toggle.
Small Step Back: MCE does not support it.
Toggle Watched: MCE does not support it.
Subtitles: MCE does not work right for me. I want it to toggle. I'm not sure what it does.
Next Subtitle: MCE does not support it.