In Central as of today, the containers indicator has been changed such that it overlaps with then URL bar.

I'll take a guess that this was caused by bug 1374477.

TBH, I suspect it's not worth fixing this separately from bug 1378560.

(In reply to Johann Hofmann [:johannh] from comment #1) > I'll take a guess that this was caused by bug 1374477. Confirmed via mozregression. (I hit this bug as well, and was motivated to track it down & file a bug; happy to find it's already been filed.) https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=807acedaf25de607e78ef55453cef1a5e25e183c&tochange=280149adf2844c7f04f92e67f6beaae3d27e3693 STR: 1. Install Test Pilot and Containers experiment from https://testpilot.firefox.com/ 2. Long-click the new tab icon, in tabstrip (click and hold) 3. From the 'containers' menu that appears, choose 'work'. ACTUAL RESULTS: The briefcase "work" icon is directly adjacent to the edge of the URL bar. EXPECTED RESULTS: The URL bar should have some padding at its right edge (and the containers icon should probably be to the left of the page-action menu? That's how it was before this regressed) Side note: The original screenshot here used "Banking" as the container-category, and that looks similarly-broken in my main profile, but it's less-obviously-broken in a fresh profile because the dollar-sign icon is skinnier there -- it doesn't get a circle background for some reason. Maybe there's been a Containers icon refresh that only takes effect for new installs? not sure. In any case, "Work" has a reliably wide icon (in my main profile & in a fresh profile), & hence that one is a good way to reliably see the brokenness here.

Going to dupe this over to the bug where this'll get fixed: bug 1378560.