Yeah, that's why it's (lower) on my priority list right now, since it doesn't effect usability, just looks ugly. Ugly but functional... A good motto for the times.
What it probably means is that I need to backup the forum and then update the version of the forum software we're running. The current version doesn't support the (modern) php standards, but *was* working. I've been putting off upgrades because, well, who knows what might not work as expected, but this is as good of a sign as any that it needs to happen.