There appears to be a bug in the user icons displayed in the web version of mastodon v4.3.1 on the notifications page. The same user icon can show up multiple times.

This has happened on many of my posts for the past few days.

@john #mastodon #mastodonbugs #mastodonSuggestions #mastodonSupport

I may well do a bug report, but in case I forget I'm making this post.