Hi,
current Firefox 54 finally supports overriding New tab page.
However there one major issue:
When opening new window of Firefox, address-bar contains addons URL and the cursor is placed at the end of the URL! - this is however very annoying since you have to select the text first before you can start typing URL.
When opening new tab, the address-bar still contains addons URL but the whole URL is selected so you can just start typing (still many people don’t know they can overwrite selected text by typing text without deleting it first).
Can I force to clear URL? Or is this a Firefox bug?
In Chrome the address bar is just empty for new tab page.
My addon is Group Speed Dial
Thanks for help!