TYPO3 Core

Error:

PHP Notice: Accessing static property <class>::<property> as non static in [...]/typo3/sysext/extbase/Classes/DomainObject/AbstractDomainObject.php line 272

Should be easily reproducable by adding a static property to any domain model (e.g. protected static array $sharedRuntimeCache = [];) and then dumping it via the extbase DebuggerUtility::var_dump

Solution proposal:
Before:

            if ($this->isPropertyDirty($this->_getCleanProperty($propertyName), $this->{$propertyName}) === true) {
                return true;
            }

            $reflectionProperty = new ReflectionProperty(static::class, $propertyName);
            if ($reflectionProperty->isStatic()) {
                $value = static::$$propertyName;
            } else {
                $value = $this->{$propertyName};
            }
            if ($this->isPropertyDirty($this->_getCleanProperty($propertyName), $value) === true) {
                return true;
            }