Thumb3X not working with MODX 3.2.0?

Is anyone having trouble using Thumb3X with MODX 3.2.0? I’ve been using Thumb3X just fine on a site, but after updating to 3.2.0, it’s not generating any thumbnails at all. No settings have changed on the site.

I quickly tested Thumb3x (3.0.6-pl) on MODX 3.2.0 and I can’t reproduce any issues.

Did something else change (like e.g. the PHP version)?
Are there any related error messages in the error log?
Does this only affect new thumbnails or also existing ones? (Does the CMP “Extras” → “Thumb3x” still show the existing thumbnails?)

No errors, either in MODX log or PHP logs. Yes, existing thumbnails work.