A recent update has borked the anomaly tooltips in the zone of influence.
Hovering your mouse over an anomaly should show you what type of anomaly it is, for example, Space Junk, Capsule, or Artifact. This is no longer consistent.
Now, if one of your ships has not passed by the anomaly (within its sensor range), hovering over the anomaly does nothing.
This can be the cause of many wasted turns only to discover upon arrival that it is protected by Pirates or some such thing.