Outside of the common bug that are seen every five seconds (teleport bug, skip time when fast forward, lost action during queues), what was the last minor bug/what was the last game-breaking bug you experienced?
Minor bug ex. My toddler phases into the high chair once she's done eating. In an earlier patch, he/she could not even be placed in the high chair, so it is an improvement.
Major bug ex. A sim would have a go to bed action stuck in the queue which interferes with any other action. It cancels any other future action as the Sim tries to go back to bed.