Yii setFrom() strips spaces how to fix?

Question

Yii

Hello.
--
Here is the function that sends emails.

public function sendEmail($email)
    {
        if ($this->validate()) {
            return Yii::$app->mailer->compose(['html' => 'friend'], ['user' => $this, 'token' => Yii::$app->user->identity->nik])
            ->setTo($email)
            ->setFrom([Yii::$app->user->identity->email => $this->user])
            ->setSubject(Defina::my.' - Приглашение от '.self::Sender($this->user))
            ->send(); return true;
        }
        return false;        
    }

Everything works fine, but the name and surname stick together.

I cannot understand why this is happening. I inserted a special html character, but it is displayed as characters and not as a space.
There is a suspicion that the setFrom() function does this.
How can I influence this, what interferes?
Otherwise, the name and surname stand works fine, without sticking together.