iOS Feedback Assistant (Public Beta) submitted date

Has anyone running iOS Public Beta noticed that some submitted bugs' dates change in the Feedback Assistant App? For example, I have several bugs with yesterday's and today's date listed in my "Submitted" folder that I submitted several days ago or longer. I'm trying to figure out if this means that Apple is actively working on these bugs and it changes the date when the software engineers make comments on their end, or if this means that they are duplicates and are discarded or merged. I didn't find any documentation about it from Apple or any info searching here. It would be nice if Apple kept us a little bit more in the loop or allowed us to at least see the status of the submitted bug (i.e. In Progress, Need More Information, Duplicate, Not a Bug, Fixed etc.) so that we know if we are wasting our time or the submitted information is actually useful. I have been a part of the public beta program starting with iOS 8 (before that I had a developer account for testing), and literally ALL of the bugs I have submitted have not been fixed, and they have never reached out to me for more information. I just recently noticed the dates changing, so I wasn't sure if that's a sign that they're actually reading them or not.