I mean, the old saying of fixing one bug creates one hundred more. I didn't have any issues with that mission in two play throughs, though I did notice that there's a potential delay in when he calls you and this was before the patch
Spoilers ahead:
If you do the mission chain where you take down the Kang Tao AV and then have Takemura come and interrogate Hellman, you won't get a call from Takemura to continue the parade route until after you've waited 24 hours of game time assuming you did one of the missions involving the parade prior to it's conclusion