Andrew Kharlamov

For me this was a problem with the port. If I ran `heroku logs -t` I would get: ``` Starting process with command `cd /app/heroku_output && dotnet ./MyAppName.dll --server.urls http://+:17005`...

I am managing the `selectedIndex` state myself and using `e.preventDefault();` on the nested `role='tab'` and a guard on `e.defaultPrevented` on the `onSelect(index, lastIndex, e)` event handler seems to be a...

Just wanted to say thank you, that last push had a significant impact on some of the performance issues I was experiencing.