JS runtime error when fighting Doppleganger

[Duress]

Game version: 0.8.13
Client: Stand-alone game client from Steam (Electron app, I imagine?)
Host OS: Ubuntu 22.04

My game just threw a fatal error from the JS runtime while exploring the Warped Wayfort. This popped up when encountering Doppleganger to fight, as soon as the fight tried to load up.

Toubleshooting steps taken:

• Selected "Load Checkpoint" (this stepped me back to a few spaces prior to the encounter) and approached again. The same error occured.
• Selected "Load Checkpoint" and explored the rest of the dungeon floor, triggering a few more random combats, then approached again. The same error occured.

Stack trace:

TypeError: Converting circular structure to JSON --> starting at object with constructor 'N' | property 'perks' -> object with constructor 'Array' | index 0 -> object with constructor 'n' --- property 'owner' closes the circle at JSON.stringify () at window.nukeReferences(file:///home/duress/snap/steam/common/.local/share/Steam/steamapps/common/Corruption%20of%20Champions%20II/resources/app/756.8bc50284778a00d30f39.js:1:4766633) at h.value (file:///home/duress/snap/steam/common/.local/share/Steam/steamapps/common/Corruption%20of%20Champions%20II/resources/app/505.78b4322342cc7f04b35f.js:1:213315) at file:///home/duress/snap/steam/common/.local/share/Steam/steamapps/common/Corruption%20of%20Champions%20II/resources/app/756.8bc50284778a00d30f39.js:1:4628402 at Array.map () at e.value (file:///home/duress/snap/steam/common/.local/share/Steam/steamapps/common/Corruption%20of%20Champions%20II/resources/app/756.8bc50284778a00d30f39.js:1:4628376) at n.value (file:///home/duress/snap/steam/common/.local/share/Steam/steamapps/common/Corruption%20of%20Champions%20II/resources/app/505.78b4322342cc7f04b35f.js:1:38876) at h.value (file:///home/duress/snap/steam/common/.local/share/Steam/steamapps/common/Corruption%20of%20Champions%20II/resources/app/505.78b4322342cc7f04b35f.js:1:282418) at e.value (file:///home/duress/snap/steam/common/.local/share/Steam/steamapps/common/Corruption%20of%20Champions%20II/resources/app/756.8bc50284778a00d30f39.js:1:4620883) at e.value (file:///home/duress/snap/steam/common/.local/share/Steam/steamapps/common/Corruption%20of%20Champions%20II/resources/app/756.8bc50284778a00d30f39.js:1:4620141)