We've noticed that sometimes when you search using a constituent ID it doesn't always find the person. They can be found using the constituent ID in database view. This is not helpful for our organization as our field staff do not use the database view. Please make the web view search more functional.
The issue you describe sounds more like a bug than an idea to me. If you can duplicate this with a specific constituent ID, I would suggest contacting support with this information so we can troubleshoot. Thank you!