3 simple thoughts

[Belgabor]

Thanks for the feature =)
I have to admit that there is a flaw in using it. There is absolutely no visual feedback of the control that shows you there are more tabs than visible. This is especially inconvenient as the shifting-off-too-early bug is still present

[Darck]

I support idea of signature with a small [...] instead of horizontal lines, which imho aren't the best solution.