rTorrent crashes adding torrents with more files

[mirolm]

I noticed a crash with current rtorrent master (d514e52) and libtorrent master (53f6b28).

To Reproduce:

1. Add a torrent with single file - single anime or series episode.
2. Adds and downloads fine.
3. Add a torrent with a whole season - for example [NH] BOFURI: I Don't Want to Get Hurt, So I'll Max Out My Defense S01 (BD 1080p x265 10-bit FLAC) [Dual-Audio]. This torrent has 12 episodes.
4. rTorrent crashes both with torrent or magnet link.
5. Upon restart rTorrent does not show the torrent at all.

You can see the crash below:

rtorrent[1947592]: Caught internal_error: FileList::split(...) split size does not match the old size. [#2E426C752D5261792E31302D4269742E4475616C]
rtorrent[1947592]: /usr/local/lib/libtorrent.so.23(_ZN7torrent14internal_error10initializeERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x34) [0x7f286e231d64]
rtorrent[1947592]: /usr/local/lib/libtorrent.so.23(+0x42177) [0x7f286e1f1177]
rtorrent[1947592]: /usr/local/lib/libtorrent.so.23(+0x424dc) [0x7f286e1f14dc]
rtorrent[1947592]: /usr/local/lib/libtorrent.so.23(_ZN7torrent19DownloadConstructor17parse_multi_filesERKNS_6ObjectEj+0xd10) [0x7f286e25bc50]
rtorrent[1947592]: /usr/local/lib/libtorrent.so.23(_ZN7torrent19DownloadConstructor10parse_infoERKNS_6ObjectE+0x32d) [0x7f286e25eb7d]
rtorrent[1947592]: /usr/local/lib/libtorrent.so.23(_ZN7torrent12download_addEPNS_6ObjectE+0x88) [0x7f286e241af8]
rtorrent[1947592]: /opt/flood/rtorrent(+0x580b5) [0x55b1f891e0b5]
rtorrent[1947592]: /opt/flood/rtorrent(+0x514a1) [0x55b1f89174a1]
rtorrent[1947592]: /usr/local/lib/libtorrent.so.23(_ZN7torrent11thread_base10event_loopEPS0_+0x165) [0x7f286e235ce5]
rtorrent[1947592]: /opt/flood/rtorrent(+0x4c893) [0x55b1f8912893]
rtorrent[1947592]: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xea) [0x7f286de15d7a]
rtorrent[1947592]: /opt/flood/rtorrent(+0x5091a) [0x55b1f891691a]

Operating system is: Debian 11.11 x86_64