bash does not recache a path if the file gets missing

[Removed by request]

I'm using Ubutu 16.10 dev with bash 4.3-15ubuntu1 and I'm noticing that bash caches the path of a command if the current bash instance successfully finds it in the $PATH environment variable. But after this caching happened if the file gets missing but reappears at another location bash claims just that the file is in the old path missing. I think in this case bash should withdraw the related cache entry and search again in the $PATH environment variable.