Yes, because there is no "blocked" status. "In Progress" includes waiting for reviews when nothing is really happening. This is normal.
It should be assigned so as to show that someone has done or will do the work. It's often too hard (or too much effort) to find that information in the comments section alone. If a bug is left unassigned it may then get assigned to a second person, unknowing that a first has already done the work.
Yes, because there is no "blocked" status. "In Progress" includes waiting for reviews when nothing is really happening. This is normal.
It should be assigned so as to show that someone has done or will do the work. It's often too hard (or too much effort) to find that information in the comments section alone. If a bug is left unassigned it may then get assigned to a second person, unknowing that a first has already done the work.