Your on 🔥

@FloEdelmann if you want to take care of this issue, I think it's only a matter of adding if branchselector.is('.btn-sm'), mybutton.classList.add('btn-sm')

The init function is not called at all when clicking on the browser's back button. That means that the Issues tab is automatically re-selected when navigating back. How can we catch that case?

That can be done via repeatOnAjaxEvenOnBackButton: true, but that shouldn't be needed.

Refer to the previous fix: af843eb

In that case our code was fine, but it GitHub was adding the class due to data-selected-links attribute.

The data-selected-links is actually still removed from the Bugs tab: 1da152b#diff-932095cc3c0dff00495b4c392d78f0afR60

I suspect we can't remove it from the Issues tab, right?

If the Issues tab still has it, however, GitHub will select it when going back to the Bugs tab (which is actually the Issues page).

I've now tested removing data-selected-links from the Issues tab and it indeed fixes the #3001 bug. It also looks like everything is still working as expected, only the Issues tab no longer is rendered via PJAX, but triggers a full page load.