Describe the bug
Just realise you couldn't click the up/down key to cycle through the last input message/command

To Reproduce
Steps to reproduce the behavior:
Enter a command for ex /help
Then press enter and then the up arrow nothing get copied

Expected behavior
Normally when you press enter then the up arrow it would automaticly copy the last entry, here /help

I haven't gotten down to the bottom of this yet, but I found if you hit Alt + Up/Down arrow, it will cycle. I'm not sure if this is a Prat feature or something Blizzard have added.

Amazing that you realise Alt was working, it's barelly an issue now

Will still need a clear explanation of why this is.

1. Does Up/Down arrow using default Blizzard chat cycle the history? Or is it Alt + Up/Down arrow
2. I vaguely recall Prat having a setting for whether you need to Alt + Up/Down or just Up/Down arrow.

Default UI requires holding Alt to scroll through previously sent messages. Many Addons remove the requirement to hold Alt.

Looks like EditBox:SetAltArrowKeyMode(enable) might help here.
Unfortunately, it seems to be broken and only enables Left / Right navigation, Up / Down still requires the Alt key.

Thanks for the report all. I've opened #96 specifically for this new feature so I'm closing this now!