[arch-general] browser and tty

Dear list, I decided to get rid of my mate DE and go i3. Before I am testing my settings on tty2 (Ctrl+Alt+F2) with a modify .xinitrc (exec i3). I have a weird behavior as regarding my web browser, could it be chromium or firefox. On my i3 config. I have this line: assign [instance="^chromium$"] → 1 Unfortunately, when I log in on tty2, there is no chromium being started. When I am back on tty1 (mate session), I find chromium being opened. Then, on tty2, if I start manually firefox, I can't as I am told "firefox is already running". Indeed it is but on tty1. It seems like web browsers are "attached" to my tty1. Is there any reason for this behavior? Shall I modify anything to start any web browser on tty2 ? Thank you for help.