Weirdly formatted addresses in tx_out table

[SebastienGllmt]

We tried the following query on MC4

select
  address,
  block.time
from
  tx_out join tx on tx_out.tx_id = tx.id join block on tx.block = block.id
where
  address not like 'addr1%' and address not like 'Ae2t%';

and we see addresses like

YQdiVKZwx4RvDy5Dj5xgna6DvYF7fDhLmf8VwWMzmqv456FPWRYCPukVmU4qp3wbzxGjbNR
Ge7xpZdib9U8D7zhRFduVrKcVpXjCpbS53xzYcqqjkS4EMqe6E5ziC15JjZePe7xbpZXZUetP7DCv7
sxtitePxjp5YrR9PFKDQ9B7DiuQqvGyG4672MerGHTEzzUbxCnBdG5N1QnCHNM4j8Avp7XET8MwiyVJh2bonk54Grq
J7rQqaLLHBFf29KovwKTJQqs847M2hKTjzY7FF3wqZysFtxd9jY1dC2M4U6Nu1qFGnZJA2um5WPPhDond21cWYLnK3DJp

Any idea what causes these addresses?

[SebastienGllmt]

I now realize this is probably due to the address attributes fiasco from 2018 or so