Would someone note if I comment on closed issues or are they filtered out?
To me this one looks like a mistake when importing the issues from the old tracker.
Other reasons (but then it is often documented)
-> someone tried to reproduce and could not (e.g. misunderstanding)
-> the issue was open for a looong time and nobody cared (we do that less these days)
Can I /or should I reopen issues if they are reproducible.
Yes!
Marcus