Do not wait, start another scrub, verify it passes. Waiting “could” be putting your data at risk.
There are many things which could have caused this, until you see this repeatedly then you will not know for sure.
Please give my Drive Troubleshooting Flowchart a try. I can see you missed some steps, or you just didn’t mention them (smart long test for example). I also can see that with Fangtooth, I may need to update the flowcharts slightly. I like the screen format you posted, it provides good data but does not clearly tell you if the drive is bad or not.