Issue #26190: Preston offers dialogue option "Attack Institute" just prior to ending of MQ302Min/RRAct3Lost
So, I blow up the Institute. Then Preston talks about how it's finally over and so forth and then I get this: https://i.imgur.com/eRAkCdQ.jpg
The "Attack Institute" dialogue option is available briefly before the MQ302Min quest and/or RRAct3Lost quest shuts down. The player says: "I need your help to attack the Institute."
Preston says: "The Institute? Why would you want to mess with them?"
Then it gives you like four options, including "My wife" and I forget the other three. Usually by the time you reach that point the quest(s) will have shut down and the dialogue tree will just go away, but this obviously shouldn't happen even if it's just for a brief moment.
I've attached two saves to reproduce it. Save 325 is just before pressing the detonation button. Save 326 is just after the ending cinematic and should be enough to reproduce the issue, but I decided to include one before the ending video plays out just in case.