These aren't even bugs, they're "UI problems." For something experimental, I think it deserves some slack even for actual bugs. UI-wise and even bugs-wise, eg 40 years old C++ debugging experience in 35 years old gdb will give any experimenral language a run for its money (eg printing funcname()::staticvarname is wierd UI and fails about half the time, etc.), not to mention C++ build systems. I think for experimental tech you might criticize the concept but it's entitled to a rough UI.