No visual bugs.
There is something black on the bottom of the menu. It could be the bottom of the tab counter. Maybe you could move the menu a bit down?

I think that's fine.๐No need to change.
I'm happy for you if you don't mind. For me it's distracting. Details in design are important and in fact it's a regression since Firefox Preview 5.2, it was not an issue in Firefox Preview 5.1 and older versions. But it's up to Mozilla's designers to decide if a change is needed or not. If they say that no change is needed _then_ no change is needed. As a tester I report anything I notice and of course not everything will be changed. But it's still important to report such things, regardless of the result.
It's just a thin line( thinner than hair) from tab button....not that much visible...๐
But still very noticeable for some people. Especially because it's such a thin line it feels like a visual bug and its easily avoidable.
@cadeyrn somewhat I disagree to that...I have a large screen device 6.56" but still that is hardly noticeable...and also it is completely understandable because that thin line is from tab button...maybe they can expand the menu by 1-2dp to cover that ๐
Again: It's very noticeable for some people - of course not for everyone. I have the same answer for you as for lomomcat: I'm happy for you if you don't mind. But please accept that some people have an eye for details while others don't or at least not in the same way. I am a web developer and my customers have the highest demands so my eyes are trained for such details and thus it's really eye-catching for me so the issue is not meant as a joke but as a serious report. If Mozilla's designers are okay with that - fine. But as I already said: it's still important to report such details. Especially since it's a regression. The issue did not exist until a few weeks ago. So there's a chance it's actually unintentional. Testing software also means to report details that could be unintentional even if it's not sure if it will be fixed or not.
Why is that up. Is really easy to see and annoying. I not using it anymore because of it and the new tab list.
The current margins is Right: 32px, Bottom: 56px. The Bottom one should be 32px like the Right.
Seams this still happens on start page where no website is open.
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Again: It's very noticeable for some people - of course not for everyone. I have the same answer for you as for lomomcat: I'm happy for you if you don't mind. But please accept that some people have an eye for details while others don't or at least not in the same way. I am a web developer and my customers have the highest demands so my eyes are trained for such details and thus it's really eye-catching for me so the issue is not meant as a joke but as a serious report. If Mozilla's designers are okay with that - fine. But as I already said: it's still important to report such details. Especially since it's a regression. The issue did not exist until a few weeks ago. So there's a chance it's actually unintentional. Testing software also means to report details that could be unintentional even if it's not sure if it will be fixed or not.