Long story short, near the end of the mission you're require to construct a casino. Then you must either buyout the other independent casinos or torch them down.

Here's the bug. If you proceed with the buyout option instead of constructing one by yourself, the game won't let you progress any further.

There are total of 3 casinos on the district. So if you acquire one through buyout, that will leave 2 more independent casinos that need to be bought or torched down. Naturally the game should notify there are 2 more independent casinos via the objective menu. However the counter act the other way around instead. The game will notify there's 1 more independent casino left, after you either bought or torch it then it notify there are 2 more independent casinos whilst in reality there's no more independent casino left, leaving you stuck forever.

But if you choose to construct one by yourself, the mission will immediately ended abruptly even though you haven't eliminate or bought the other 3 independent casinos. Your 2nd in-command appear to brief the task but a "Mission Completed" window will popup and take you back to the map screen.

I already completed this game once before. I don't remember this bug from the old build (pre-patch).

Had a quick glance at Kalypso forum. Seems this patch introduced myriad of bugs. The developer already took notice, they're working on these issues.

1.07 supposedly fixes that one. I hope it comes out fairly soon on GOG too, because I ran into a similar bug in one of the next missions, Georgia Ave. Haven't found a workaround for that one yet, sadly :(

*minor spoilers ahead*

There's a point in the mission where you bribe some cops. From a walkthrough I gathered that's supposed to put some of your guys into jail and give you some new missions. Neither of that happens, bugging the mission out.