In 2.7.10 the arrow keys work normally
In 2.7.11 left gives ^[[D
In 2.7.13 left gives ^[[D
Tried various terminal setups in putty and from a nomachine session and from an xterm. Host is centos7. all 3 version are installed on the same machine.
Up arrow gives ^[[A which makes it annoying to retype a whole line for a simple typo.