brace expansion fails in 4.3, succeed in 4.2

[NBaH]

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-unknown-linux-gnu' 
-DCONF_VENDOR='unknown' -DLOCALEDIR='/home/nbah/share/locale' 
-DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib 
  -g -O2
uname output: Linux myOwnMachine 3.2.0-4-amd64 #1 SMP Debian 3.2.57-3 
x86_64 GNU/Linux
Machine Type: x86_64-unknown-linux-gnu

Bash Version: 4.3
Patch Level: 11
Release Status: release

Description:

bash-4.2 $ printf "%s " "$(date -d -"{0..9}"days +%Y%m%d)"
20140510 20140509 20140508 20140507 20140506 20140505 20140504 20140503 
20140502 20140501

bash-4.3 $ printf "%s " "$(date -d -"{0..9}"days +%Y%m%d)"
date: date non valide « -{0..9}days »