Just to provide some context, Jörg Schilling is author of star[1], which is listed among key implementations of tar on wikipedia[2].

One can check the problems he noticed in gnu tar implementation in the readme file of his start project:

https://sourceforge.net/projects/s-tar/files/README.otherbug...

But note that the last version of star was released in 2008 and README.otherbugs file is actually from 2001.

[1] https://sourceforge.net/projects/s-tar [2] https://en.wikipedia.org/wiki/Tar_(computing)#Key_implementa...