1.umm one is gray and one is black.
2. Yeah people have been complaining about G, i'm sure Fizzer knows. However i haven't heard about this clicking history over and over again bug. send a bug report to Fizzer https://www.warlight.net/reportbug
Also the left arrow key will do the same thing as G. (and home and end)
Edit:holy shit, figured out what you are talking about, it seems like when you hit "g" it still tries to put you in history and the menu thinks you are in history (thus making the history button Gray). weird.
Edited 2/10/2017 20:39:08