Sidebar with web apps (containers)

[S2009-dev]

I don't know if you could solve this, but when I use Firefox web apps by clicking on this button , the sidebar is masked which is good, but it remains a not very attractive space on the left, like this:

I'm on the latest version of Firefox Developer Edition.

[Godiesc]

Thanks for the report, I didn't test that feature, I the styles isn't prepare for that, I will check in a future.