I'm having trouble reproducing this crash-on-exit (or closing project) bug and I can't make shotgun fixes forever, so I've made one more guess-fix and included the debugging data (.pdbs).
You can download the modified build here
(about 23mb, includes debug data). Paste the EXE and pdb file over your existing 28.2 to try it out.
If it still crashes, a crash dump or better yet, a call stack, would be very helpful! Let me know how it goes...