It interprets "address" in the placeholder text to mean the field is a (street) address input, and also ignores both autocomplete="off" and data-1p-ignore
<div>
<label for="functions">Solidity code</label>
<textarea name="functions" id="functions"
- placeholder="function balanceOf(address _owner) external view returns (uint256 balance)" autocomplete="off"
- required></textarea>
+ placeholder="function totalSupply() external view returns (uint256)" autocomplete="off"
+ data-1p-ignore data-lpignore required></textarea>
</div>
<div class="minimum-container">