Leaky ceiling
You would usually expect your landlord to step in when there was something dangerously wrong with your house or apartment. A leak in the ceiling, especially one near a light fitting, is usually an urgent task. However, some landlords would rather not spend the money or the time to fix things.
This photo is a prime example of when trying to avoid spending that time on fixing a problem ends up being much more time-consuming, much more complicated, and in no way effective. Instead of just paying to fix the leaky ceiling, this convoluted solution probably took longer and is not a permanent fix, so it will cost much more in the long run.