Bug on the computer analysis?

My last game analysis seems like it's not working properly http://en.lichess.org/eyOs2mB2/black

the same for me.
http://fr.lichess.org/o8PgGUiS
On my 8th move (the white), the analysis tells Rc1c4 is better but it writes only c1c4 and when I click on it to see the proposed sequence, it is ignored and one jumps directly to the black 8th move

Yep, exactly.
Can't seem to "visually view" the "better move/sequence" in Analysis Mode.

It goes back to the previous move made, when the "better move/sequence" is clicked.

fixed. The next analysis will be ok.