Custom Dimension values unavailable

Hi,

I've been trying to understand why some of my custom dimension values aren't getting reported and I am now out of ideas...

A few weeks ago, I've set up a few custom dimensions (both as event and user events, so as to test things).

GA4 config

I see them being sent to GA through GTM server-side.

GTM server-side

One of the dimensions ("consent") is being reported. The other two ("crawler" and "fetcher") are not, either in standard reports or in custom reports.

GA4 event report

GA4 custom report

Does anyone have any idea what's happening? I have just enabled BigQuery and will also report back if the values are showing or not.