Fix: `Referencing entities in where filter causes an error.`

[plypaul]

Resolves #256

Description

Please see the linked issue for more details.

Checklist

• [x] I have read the contributing guide and understand what's expected of me
• [x] I have signed the CLA
• [x] This PR includes tests, or tests are not required/relevant for this PR
• [x] I have run changie new to create a changelog entry

[Jstein77]

@plypaul per our convo in Slack I think we should backport this to 0.4.latest fix.