Code folding is not saved for all tabs after the first one, when it is open in both views.
How to replicate:
1. Exit all files
2. Open two files with foldable things
3. Clone both files to the other view(in the same order otherwise it sometimes doesn't work)
4. Fold random things in all four tabs
5. Close and reopen the session
6. See that not all folds were saes