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But Electrum is using UTF-8 character encoding, so maybe the (UTF-8) character set that has been used to create your seed on MS Windows is not the same as the one used on Tails?
In order to eliminate the dependency on a fixed wordlist, the master private key and the version number are both obtained by hashes of the UTF8 normalized seed phrase.
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First I need to understand what that means in order to answer on that one but as mentioned above wallet was created on Tails OS.
But maybe this what you wrote has to do with the issue because the seed was generated in older version.
No if all you are saying is right, it can't have anything to do with the issue unfortunately. UTF-8/Unicode compatibility disorder are pretty frequent between different operating systems, but it's a very rare mistake/error on a same OS.