Mine was glitched. As there is no guide, heres what to do, or if you believe you already (probably) know what to do, you have to...do them all over until it pops. I know. Suffer with me.
Its okay though, it'll still pop. The last one I had to do was the excrutiating room inspection one. I swear I never wanna hear ''tsk tsk tsk'' from anyone anywhere ever again. I didn't miss it from HITMAN 2016, I won't look forward to it if I need to do bangkok AGAIN in hitman 3.
the reason I had to redo story missions that were marked as completed already, was because 2 very possible factors. 1.) didnt read clip board in basement to initiate the story mission. i already know in some if not most/all cases, this doesnt matter. Back in HITMAN 2016 it did, because story missions, then known as "opportunities", ypu had to get the intel first in my personal experience.
2.) I had to delete my save data on xbox while trying to get the secret achievement where you needed to kill both targets with falling accidents and coconuts. Didnt have to in HITMAN 2016 but had to here. It worked though.
Best of luck. Hopefully this doesnt happen to you. Hmu through xbox messages for any further assistance I may be able to give. Good luck.