Feature or bug in Home Assistant 2023.9?

Before Home Assistant 2023.9, I have seen name of all Tasmota entities formated as “Friendly_Name” (Example: “Relay1”). After update, I see them formated as “Hostname/Device_Name Friendly_Name” (Example: “SmartSocket_1 Relay1”).
Is this feature or bug?

See the breaking change for mqtt in the 2023.8 release notes https://www.home-assistant.io/blog/2023/08/02/release-20238/#breaking-changes

Ok…Thanks. It’s quite weird that I have had not that kind of problems with 2023.8.x…

Any better way to short entity names from “Hostname/Device Name” to “Friendly_Name” without manually rewrite every one (about 350) of them?