Unhandled promise rejection: TypeError: can't access property "threshold", chosenPolicy is undefined

[akselinurmio]

We're seeing a number of the following client-side errors in one of our web apps' application monitoring, that look like this:

Unhandled promise rejection: TypeError: can't access property "threshold", chosenPolicy is undefined
at <anonymous> (<anonymous code>:4802:38)

This doesn't seem to correlate with any of our organization's or dependencies' code, but according to a quick global Github search, this might originate from your code, specifically this line:

content-scope-scripts/injected/src/features/cookie.js

Line 215 in 6d07be5

if (cookie.getExpiry() > chosenPolicy.threshold) {

My team and I would be glad if you could take a quick look into this, and see if you could either:

1. catch this exception on your side, so that it doesn't show up in our logs, and/or
2. find out what is causing this error and fix the reason it's showing up.

Error Sample

Here are some details of the error:

@timestamp
2026-01-01T20:21:22.893Z

url.original
https://areena.yle.fi/1-75616289

user_agent.original
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:146.0) Gecko/20100101 Firefox/146.0

[jonathanKingston]

I made a PR for this but still haven't reproduced this ourselves. We're discussing it still.