Possible regression with spreading nested arrays into a function call and references

Description

I've noticed the following possible regression:

$args = [1];
$ref = [&$args];
function test(&$v) {
	$v = 7;
};
test(...$ref[0]);
var_dump($args[0]);

Starting with PHP 7.3, the output of the above code has changed:

$ docker run --rm php:7.2.34 -r "$args = [1]; $ref = [&$args]; function test(&$v) { $v = 7; }; test(...$ref[0]); var_dump($args[0]);"
int(7)

$ docker run --rm php:7.3    -r "$args = [1]; $ref = [&$args]; function test(&$v) { $v = 7; }; test(...$ref[0]); var_dump($args[0]);"
int(1)

$ docker run --rm php:8.3.7  -r "$args = [1]; $ref = [&$args]; function test(&$v) { $v = 7; }; test(...$ref[0]); var_dump($args[0]);"
int(1)

The only entry I've found within PHP 7.3's release notes that might be related is References returned by Array and Property Accesses are immediately unwrapped. But I'm not sure whether this does actually describe the behavior change in the code snippet above.

I'm also not really sure whether the code is valid or not. In case it is not, it might be helpful to display a message.

There exists a workaround to get the old result by introducing another variable:

$temp = &$ref[0];
test(...$temp);

PHP Version

PHP 7.3.0 - PHP 8.3.7

Operating System

No response

まず、PHP 7.2、7.3、8.3 でネストした配列のスプレッドと参照の例を再現し、その後、PHP 7.3 の参照のアンラップに関する移行ノートと比較します。変更された結果が有効かどうかを判断します。完了条件は、期待されるセマンティクスを文書化し、動作が誤っている場合に修正または診断を追加することです。