Bug#1040782: bug not present in 2.99.16

[graeme vetterlein]

To help in narrowing this down, I installed the version from  the 
experimental repo.


I got 2.99.16. This does not appear to show the bug, so I guess it's a 
Debian packaging issue.

     "This is an unstable development release commit d3c5536"

graeme at real:~/Documents/Remote/Bugs/Gimp/1040782$ apt-cache policy gimp
gimp:
   Installed: 2.99.16-2
   Candidate: 2.99.16-2
   Version table:
  *** 2.99.16-2 100
           1 https://deb.debian.org/debian experimental/main amd64 Packages
         100 /var/lib/dpkg/status
      2.10.34-1 500
         500 http://ftp.uk.debian.org/debian unstable/main amd64 Packages