Invalid API name when used with topic assignment table

[jimothyr]

The field finder, and by inference the validation check fails when used with anything other than articles with the topic assignment object.

File finder finds list of potential linked entities where topics is enabled. Field finder then only shows API names for Knowledge articles.

I assume this is the first one the list.

This then means that using any field that doesn't exist on all entities is not usable by the field set... entity.Name always works. Any other field from any other object (including custom fields) fails the validation test.

Config