Edit: what is this?
19eVSDuizydXxhohGh8Ki9WY9KsHeT75TY
It shows as invalid address but blockchair shows only the BCH balance and not BTC, I changed the checksum myself, isn't it weird?
That looks like a bug in blockchair website's backend that simply skips checksum validation of the base58 string you enter in the search box. They probably decode it using base58 and just drop the last 4 bytes (and version byte) then search their database.
The reason why it only shows bcash history is because this address was only used on bcash blockchain.