[SalesForce] LWC design attributes doesn’t work in the Community with Anonymous User

Did someone try to use LWC in Communities?

I created component to dynamically render Knowledge articles based on provided Topic by passing Topic.Name as Design Attribute.

It works in Builder, but when I publish Community and try to debug values for the design parameter it always returns null.

    <targetConfigs>
        <targetConfig targets="lightningCommunity__Default">
            <property name="topic" type="String" default="test"/>
        </targetConfig>
    </targetConfigs>

    @api
    topic = '';

    renderedCallback() {
        console.log(`topic = ${this.topic}`);
    }

Any advice is appreciated because I don't really want to update everything with Aura components as a wrapper.

EDIT:
The issue is that topic doesn't have the correct value when I set it in Community Builder.