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It will keep happening until all the desynced nodes get banned. Download the latest wallet, backup your wallet.dat and don't use addnodes. I'm currently running a node on the stable chain so you will connect to my node and sync to the correct chain.
How do you know that you are on the correct chain?
Which chain is currently the right one?
https://chainz.cryptoid.info/ent/
This is the correct chain, and it so happens to be one I'm currently synced to.
This was the correct chain yesterday, too, but as we saw today wasn't. The explorer also changed the chain last night.