ATP Rulebook is clear on this matter:
Section IX, Point G.(2):
Points are assigned to the losers of the round indicated. Any player who reaches
the second round by drawing a bye and then loses shall be considered to have
lost in the first round and shall receive first round loser’s points.
So, no, seeds get first round points if they lose in the second round after having a bye in the first round, meaning they get 10 points.