What "stack" are you using for your personal projects that is both widely used but so poorly supported that a bug crops up that prevents you from forward progre

What "stack" are you using for your personal projects that is both widely used but so poorly supported that a bug crops up that prevents you from forward progress? I am genuinely curious about this because I can say that I have never had that experience with something that is popular. Then again, I am an extreme minimalist when it comes to introducing 3rd party dependencies into the code that I write.