On my phone I always use the responsive design; that might cause the bug. There’s a weird bug or something that causes the scores of deleted answers (and maybe deleted questions, and maybe non-deleted of both) to show as one point higher.
For example, on Politics, there is this deleted answer. When I loaded the question a few minutes ago, the answer said it had a -3 score. However, looking at the vote counts, I saw that it has 4 downvotes and no upvotes (the timeline concurs). When I reload the page, it shows the score as -4.
This has happened on other posts.
What’s going on?