CTRL-C stops working in bash 4.0

Has anyone noticed that ctrl-c randomly stops working in the new bash?
I use rxvt-unicode 9.06-2 and it happens in a terminal where ctrl-c
worked while typing bash commands, it will suddenly stop working ie
bash will not recognise the key-press.

If I start python in the same terminal, it will notice the ctrl-c, so
it's not the terminals fault.

This started to happen with bash 4.0


--
damjan