diff --git a/tests/PHPStan/Analyser/NodeScopeResolverTest.php b/tests/PHPStan/Analyser/NodeScopeResolverTest.php
index 0701921eaf..85d802ca25 100644
--- a/tests/PHPStan/Analyser/NodeScopeResolverTest.php
+++ b/tests/PHPStan/Analyser/NodeScopeResolverTest.php
@@ -961,6 +961,7 @@ public function dataFileAsserts(): iterable
 		yield from $this->gatherAssertTypes(__DIR__ . '/../Rules/Arrays/data/bug-6364.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/../Rules/Arrays/data/bug-5758.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/../Rules/Functions/data/bug-3931.php');
+		yield from $this->gatherAssertTypes(__DIR__ . '/data/bug-5223.php');
 	}
 
 	/**
diff --git a/tests/PHPStan/Analyser/data/bug-5223.php b/tests/PHPStan/Analyser/data/bug-5223.php
new file mode 100644
index 0000000000..0e19768606
--- /dev/null
+++ b/tests/PHPStan/Analyser/data/bug-5223.php
@@ -0,0 +1,56 @@
+<?php declare(strict_types = 1);
+
+namespace Bug5223;
+
+use function PHPStan\Testing\assertType;
+
+class HelloWorld
+{
+
+	/**
+	 * @param array{
+	 *     categoryKeys: string[],
+	 *     tagNames: string[],
+	 * } $filters
+	 */
+	public function withUnset(array $filters): void
+	{
+		assertType("array{categoryKeys: array<string>, tagNames: array<string>}", $filters);
+
+		unset($filters['page']);
+		assertType("array{categoryKeys: array<string>, tagNames: array<string>}", $filters);
+
+		unset($filters['limit']);
+		assertType("array{categoryKeys: array<string>, tagNames: array<string>}", $filters);
+
+		assertType('*ERROR*', $filters['something']);
+		var_dump($filters['something']);
+
+		$this->test($filters);
+	}
+
+	/**
+	 * @param array{
+	 *     categoryKeys: string[],
+	 *     tagNames: string[],
+	 * } $filters
+	 */
+	public function withoutUnset(array $filters): void
+	{
+		assertType("array{categoryKeys: array<string>, tagNames: array<string>}", $filters);
+		assertType('*ERROR*', $filters['something']);
+		var_dump($filters['something']);
+
+		$this->test($filters);
+	}
+
+	/**
+	 * @param array{
+	 *     categoryKeys: string[],
+	 *     tagNames: string[],
+	 * } $filters
+	 */
+	private function test(array $filters): void
+	{
+	}
+}
diff --git a/tests/PHPStan/Rules/Arrays/NonexistentOffsetInArrayDimFetchRuleTest.php b/tests/PHPStan/Rules/Arrays/NonexistentOffsetInArrayDimFetchRuleTest.php
index 33139d1a7f..abba64d252 100644
--- a/tests/PHPStan/Rules/Arrays/NonexistentOffsetInArrayDimFetchRuleTest.php
+++ b/tests/PHPStan/Rules/Arrays/NonexistentOffsetInArrayDimFetchRuleTest.php
@@ -453,4 +453,26 @@ public function testBug5758(): void
 		$this->analyse([__DIR__ . '/data/bug-5758.php'], []);
 	}
 
+	public function testBug5223(): void
+	{
+		$this->analyse([__DIR__ . '/../../Analyser/data/bug-5223.php'], [
+			[
+				'Offset \'something\' does not exist on array{categoryKeys: array<string>, tagNames: array<string>}.',
+				26,
+			],
+			[
+				'Offset \'something\' does not exist on array{categoryKeys: array<string>, tagNames: array<string>}.',
+				27,
+			],
+			[
+				'Offset \'something\' does not exist on array{categoryKeys: array<string>, tagNames: array<string>}.',
+				41,
+			],
+			[
+				'Offset \'something\' does not exist on array{categoryKeys: array<string>, tagNames: array<string>}.',
+				42,
+			],
+		]);
+	}
+
 }
diff --git a/tests/PHPStan/Rules/Variables/UnsetRuleTest.php b/tests/PHPStan/Rules/Variables/UnsetRuleTest.php
index 370fe14ea6..ef7bb22993 100644
--- a/tests/PHPStan/Rules/Variables/UnsetRuleTest.php
+++ b/tests/PHPStan/Rules/Variables/UnsetRuleTest.php
@@ -57,4 +57,18 @@ public function testBug4289(): void
 		$this->analyse([__DIR__ . '/data/bug-4289.php'], []);
 	}
 
+	public function testBug5223(): void
+	{
+		$this->analyse([__DIR__ . '/../../Analyser/data/bug-5223.php'], [
+			[
+				'Cannot unset offset \'page\' on array{categoryKeys: array<string>, tagNames: array<string>}.',
+				20,
+			],
+			[
+				'Cannot unset offset \'limit\' on array{categoryKeys: array<string>, tagNames: array<string>}.',
+				23,
+			],
+		]);
+	}
+
 }