How does this work legally? You write some code, contribute it under a certain license... and... a company can just re-license your code under any license they like?
[0] https://redis.io/legal/redis-software-grant-and-contributor-...
CyanogenMod required a CLA to assign them copyright to Cyanogen Inc, only for them to basically kill the project. They forked it as LineageOS only to still require a CLA.
Don't contribute to projects with CLAs people without reading them carefully and understanding what can happen! Then you won't be surprised if a project is relicensed because you know you signed an agreement to let them do that.