[ESS] completion of command in R

[Christian]

Hi,
since I switched to Sierra (Mac) and R-3.3.2, ESS 16.04,
I miss the convenient completion of a command in R. Now C-^ brings *all* 
past commands, and the point is at the end now, instead of at the start, 
which I find more convenient.
Can the old behaviour brought back? How?
Thanks  C.
-- 
Christian Hoffmann
Rigiblickstrasee 15b
CH-8915 Hausen am Albis
Telefon 0041-(0)44-7640853