My facebook notifications are acting strangely?

[Jack]

There are a few things you can do to fix the issue. I can't tell exactly what's going on from your description, but you can do a few things to fix the issue.

First, restart your computer and your browsers. This will most likely fix the issue because the cache is getting too large and complex for Facebook. Next delete all your cookies for Facebook (a good program for this is CCleaner if you're not to good with computers).

Also, people may delete comments before you can actually view them, but they will still show up in your notifications.

If the problem continues then go ahead and contact Facebook because it may be something on their end.