While testing a recent trysever build (http://hg.mozilla.org/try/rev/8f5048cb1001) I was able to reliable go into Panorama and see a tiny group with a stack of tabs. Steps: 1. New profile. Launch the build and open one window, then another tab within that window, then another window and another tab in that window. You should have three windows, two tabs each. 2. Go into panorama by clicking on the icon in one of the windows. Notice the tiny group on to of the video. 3. Close the window, saying yes to "do you want to close two tabs?". 4. Go into Panorama in one of the other windows. Expected: A better representation of my groups and tabs. Actual: Tiny group with stacked tabs.

This bug refers to an issue in the "all windows" work in the tabcandy-central branch; marking it as such.

While this bug is specific to "all windows" scenarios, I have seen stacked tabs with on only one window(and multiple tabs). Hopefully we'll get one tracking bug for that issue this week as we triage panorama bugs this week.

Punting to the future as we are not shipping "all windows" work.

We're not gonna fix this as the all-windows feature will be re-written from scratch once we get to it.