Fix

Author: ondrejmirtes

src/Reflection/ClassReflection.php

@@ -513,6 +513,10 @@ public function hasInstanceProperty(string $propertyName): bool
 				break;
 			}
 			if ($extension->hasProperty($this, $propertyName)) {
+				$property = $extension->getProperty($this, $propertyName);
+				if ($property->isStatic()) {
+					continue;
+				}
 				return $this->hasInstancePropertyCache[$propertyName] = true;
 			}
 		}

src/Type/ObjectShapeType.php

@@ -185,9 +185,9 @@ public function accepts(Type $type, bool $strictTypes): AcceptsResult
 					),
 				],
 			);
-			if (!$hasProperty->yes() && $type->hasStaticProperty($propertyName)->yes()) {
+			if (!$hasProperty->yes() && $type->hasStaticProperty((string) $propertyName)->yes()) {
 				$result = $result->and(new AcceptsResult(TrinaryLogic::createNo(), [
-					sprintf('Property %s::$%s is static.', $type->getStaticProperty($propertyName, $scope)->getDeclaringClass()->getDisplayName(), $propertyName),
+					sprintf('Property %s::$%s is static.', $type->getStaticProperty((string) $propertyName, $scope)->getDeclaringClass()->getDisplayName(), $propertyName),
 				]));
 				continue;
 			}