When solving z^2*conj(z)=z for complex z (set in configuration) using solve, one obtains:
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list[i*` y`+sqrt(-` y`^2+1),i*` y`-(sqrt(-` y`^2+1))]
I believe this had worked in version 1.2.3, where solve returned -1, 0, 1 alongside with the above solutions (but I'm not 100% sure). There might be a regression in solve...