SEGV under Linux/Steam

I've been playing for the last week or two, via Steam, offline only; a short while ago I found Brittany for the first time, and attempted to enter the Graveyard; at the point the game crashed, leaving a core dump. This is a Ubuntu system that describes itself as:
% uname -a
Linux shad2 3.13.0-167-generic #217-Ubuntu SMP Wed Mar 13 16:18:21 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

At the point it crashed there was also a pending new game update, which Steam immediately started to download; after that completed I attempted to enter the game again, but it crashed while trying to load.

The core dump appears to be truncated:
% file core
core: ELF 64-bit LSB core file x86-64, version 1 (SYSV), too many program headers (831)
% gdb ./Shroud\ of\ the\ Avatar.x86_64 core
Reading symbols from ./Shroud of the Avatar.x86_64...(no debugging symbols found)...done.
BFD: Warning: /src/steam/steam/steamapps/common/SotA/core is truncated: expected core file size >= 5353394176, found: 104857600.

warning: core file may not match specified executable file.
[New LWP 16002]
... 43 similar lines
Cannot access memory at address 0x7fc5db5c91a8
Cannot access memory at address 0x7fc5db5c91a0
(gdb) where
Python Exception <class 'gdb.MemoryError'> Cannot access memory at address 0x7fc5db4016b0:
#0 0x00007fc5db3b83e0 in ?? ()
Cannot access memory at address 0x7fc5db4016b0
(gdb)

Going back to the last save has worked ok, so I'm back at Yew; I'll update later to advise whether this repeats when I get back to Brittany once more.

Zoe

 

Going back there from Yew it did _not_ crash, so I'm back up and running.

Please advise if for future crashes it would be useful to get a stacktrace or other info from gdb: if it would, I'll try to increase the maximum core dump size.