One lovely example i have seen is Poettering completely misunderstanding a perfectly valid use of su, and instead recommending that people ssh back to their own box if they wanted a shell under a different user.
This came up in relation to a systemd set environment variable that would break software by overwriting one user's config files with that of another's.
The variable was apparently set that way because of pulseaudio.
The really worrying part was any lack of "mea culpa" from Poettering once someone outside the bug report told him that pulseaudio could be changed so that the variable was no longer needed and Poettering implemented that change.
Instead he just left the bug report hanging, and others had to report on the changes and declare the issue sorted.
This came up in relation to a systemd set environment variable that would break software by overwriting one user's config files with that of another's.
The variable was apparently set that way because of pulseaudio.
The really worrying part was any lack of "mea culpa" from Poettering once someone outside the bug report told him that pulseaudio could be changed so that the variable was no longer needed and Poettering implemented that change.
Instead he just left the bug report hanging, and others had to report on the changes and declare the issue sorted.