Crew assignment in VAB is very buggy !!

[Caviar]

Hey all. Great work everyone !!

I have been getting a strange bug where the crew roster has all the tourists (due to an accepted contract) but does not show up on the Crew Assignment section of VAB. The only thing left to do is to edit the persistent save file after the ship has been launched. I am not able to remember from when this has started, because most of my missions were unmanned. Also, my KSP is very heavily modded. I'm attaching a .ckan file here to give you the list, and yes I know many of them are rendered incompatible due to KSP updates.

The save file and the .ckan modlist file:

https://drive.google.com/file/d/1hVSyAcJfuXAEdSRINxcDZc2bGzH8VeSE/view?usp=sharing
https://drive.google.com/file/d/118YTf_64kGmJfu26lYEDU0c0M5vH9a4j/view?usp=sharing

The VAB crew editor pic: https://drive.google.com/open?id=10jAlHIiVOYxe2kstqaHRPFfjmR2AApqM

But before that, this problem is not limited to tourists. The whole of crew assignment section itself is quite buggy. I'm not able to select the crew I would like to send on a particular mission. I thought it'd solve if I use BetterCrewAssignment mod, but to no avail. After a while, I find out that none of the crews can be assigned to any ship !!! What's happening here?