Some browsers start inline find on keypress, cancel default action on [g]

[hallvors]

Minor annoyance: we have a [g] shortcut key to take you to GitHub. However, if the browser is configured to start inline find on a keypress it will do so when the user hits G, and start highlighting various letters in the text while navigation is happening.

The simple fix is to add

e.preventDefault();

here: https://github.com/webcompat/webcompat.com/blob/master/webcompat/static/js/lib/issue-list.js#L544

[miketaylr]

@hallvors which platform does this happen on (just curious)? On mac it's /

[deepthivenkat]

#938