it’s a good practice in general to refresh the Identify screen occasionally.
once you start to see the problem but before you close the window, does clicking on the third item always give you Rudbeckia or always Rutaceae across observations? (is it consistent across observations?) what about if you repeat on the same observation? (is it consistent within the same observation?)
you mentioned that going fast or slow may have an impact somehow. can you clarify? does slowing down prevent the onset of the problem, or does it prevent the continuation of the problem?
finally, next time you start to see the problem, it might be useful to look for error messages in your browser’s developer tools console. it may also be helpful to capture a video of the problem to see it in action.