There is a strange bug with Newtab Adapter app.

[heissonly]

I am using Chrome extensions on Mac. I set previous tab command(visitPreviousTab) to <control+a> with help of shortcut extension in chrome menu. When I activate new tab and once I make <command+a> to select all things what I write on address bar, vimium goes back to one tab back(I made this action very often to delete what I wrote on address bar. ) So it doesn't make sense to me since command and control key are completely different on macs.

[gdh1995]

Vimium C can not hook keys when you're typing on address bar, so it seems it's your browser which triggered the configured shortcut on Command+A. I'm afraid that it may be an issue of Chrome.

What will Chrome do, if you replace configured Control+A with Ctrl+X, and then press Command+A on address bar?