What version of Go are you using (go version)?
$ go version
go version go1.19.6 darwin/amd64
Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (go env)?
go env Output
$ go env
What did you do?
Code -> https://go.dev/play/p/pLLAs_g3v1l
What did you expect to see?
map[query1:[test]]
What did you see instead?
map[]