When opening multiple repositories, it appears each successive repo tab is just slightly smaller than the previous tab.  I'm not sure of the reasoning but it's not very effective.

In my case, I have tabs that are far wider than they need to be and it ends up causing me to have to scroll between tabs.

My suggestion would be to have tabs have a standard min/max width and not to just start getting smaller for no apparent reason.

The size of a tab should be the minimum size needed to display the text of the tab or min/max if that size would exceed those bounds.