If anyone wanted to know the actual reason for this increase of the managed speed on landing on an Airbus aircraft.
Approach speed = maximum of VAPP or VAPP + GROUNDSPEED MINI
Groundspeed mini = (Tower wind + (TAS-Vground))
TAS is frozen at 60knots on landing and becomes invalid (on the ND dashes are shown) but groundspeed continues to be displayed down to 0 knots.
Therefore with the TAS frozen at 60knots and the groundspeed continuing to decrease the groundspeed mini is forced to increase up to the maximum allowed which in CONF FULL A320 is 172 knots. VFE FULL -5knots.