XCOM2 War of the Choosen crashing after new game intro

**Game information**

XCOM2 War of the Choosen
AppId: 268500

**Distribution name and version where applicable**

Gentoo

**Flatpak info**

Flatpak 1.12.3
flatpak --gl-drivers:
default
host

**Problem description**

The game starts fine. If you start a new game, the game crashes immediately after the intro movie/cutscence. The game also crashes if you skip the intro. Message in DialogWindow: Game crashed with signal 6

Console output:
```
libgcc_s.so.1 must be installed for pthread_cancel to work
XCOM2WotC: dumped to "/home/home/.var/app/com.valvesoftware.Steam/.local/share/feral-interactive/XCOM 2 WotC/crashes/185adb67-07c0-596d-7eae7fde-4466d7f1.dmp"
XCOM2WotC: crash reporter "/mnt/games/Steam/Libary/steamapps/common/XCOM 2/XCOM2WotC/bin/feral_linux_crash_reporter" launching
ERROR: ld.so: object '$ORIGIN/../lib/private_symbol_hack.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '$ORIGIN/../lib/private_symbol_hack.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '$ORIGIN/../lib/private_symbol_hack.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '$ORIGIN/../lib/private_symbol_hack.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
Game crashed with signal 6
Game crashed with signal SIGABRT(6): Program Aborted.
```

Following FAQ - suggestion :
```
entries:
- basedir: "*(/*|/.*)/XCOM 2/XCOM2WotC"
blocklists:
- binaries:
- path: bin/XCOM2WotC
libraries:
- path: lib/private_symbol_hack.so
```
But I do not know where to place it

**Does this issue reproduce with native Steam**

Have not tested

Any ideas? Thank you!