Schema::dropIfExists() Deleted ALL tables in DB on migrate:rollback

I ran php artisan migrate:rollback on command line, so the migration deleted ALL TABLES in db.

There is only one migration created but have others tables in used db

The laravel documentation says: "To drop an existing table, you may use the drop or dropIfExists methods."

and the function down() on migration code is the default like as bellow:

public function up()
    {
        Schema::create('products', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->integer('image')->unsigned()->nullable();
            $table->string('name', 64);
            $table->string('slug', 64)->unique();
            $table->integer('price')->unsigned();
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('products');
    }
}

I don't think the Schema::dropIfExists('products') work properlly in this case, this is a bug? or my(and laravel documentation) mistake?

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