I thought I (or something) had hosed my system, but it turns out this change is by design. After reading more closely the changelog I read
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=90483 and https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=833256 > To me this mostly seems like a(nother) case of "always use 'su -', > never su". Feel free to close this bug, sorry for the noise.
