Don't assume <Tab />
components are available when setting the next index
#2642
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Right now we assume that the
Tab
components are rendered when calculating the active index. But this isn't always the case if we are lazy loading the tab components.If no tabs are available, then calculating the next index would result in
-1
which is incorrect because then nothing is selected. Instead, we keep the currently selected index (typically0
) and once thetab
gets loaded it will be the active one automatically.Fixes: #2596
Fixes: #2640