Rename by regex not working in v9.0.3-0dc0087e (0dc0087e0)

A regex expression “{.*” that I was using previously worked flawlessly. I do not remember what the version of the Grafana was when the “Rename by regex” worked but since June 2022 it has been broken.
The names come like this:

guilds{instance="localhost:9284", job="thothbot"}
old_stats{instance="localhost:9284", job="thothbot"}
slash_stats{instance="localhost:9284", job="thothbot"}

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