I noticed that, when I downvote an answer that subsequently gets deleted, the reputation tab in my profile shows a change of -1, even though it's unchanged from when I last checked.
Here's a screenshot showing what I mean:
The highlighted events that occurred since I last checked are circled; I received an upvote, and downvoted two posts that were removed. Yet, the tab shows a change of 8, when it should be 10.