[0.18.37] Crash when trying to switch book with another book inside a book

[Till223]

I take book1, open book2, drag it on top of book3 which is inside of book2. The game crashes. Also happens when you use a blueprint instead of the books, in every combination.

I expected book1 to either be dropped into book2 or book3. Switching book1 and book3 would make sense from how it usually behaves, but with hirarchial systems I'm very used to windows file explorer, where it would make sense that book1 ends up inside of book3.

My log file is somehow 70 MB big. Here's the file: https://gofile.io/d/GjiHYc

[itsthejoker]

I hit this same bug. My `factorio-current.log` is also weirdly huge -- 348MB. Posting the link in case another crash report is useful.

Download link: https://gofile.io/d/BwiQOI