"Discovered entities with a name that starts with the device name"

[ScrewLooseDan]

My Home Assistant lists all my sensible entities needing repair, with this following:

Discovered entities with a name that starts with the device name

!! This stops working in version 2024.2.0. Please address before upgrading.

Some MQTT entities have an entity name that starts with the device name. This is not expected. To avoid a duplicate name the device name prefix is stripped of the entity name as a work-a-round. Please inform the maintainer of the software application that supplies the affected entities to fix this issue.

This started after upgrading to HA 2023.8.0. I don't believe I have anything in my settings that would cause this.