Bulk edit won't let me edit issues (only move or delete), while i have sufficient permission to do so

I want to change the "assignee" field of a number of issues, because the assignee is no longer employed, but stil gets mail from Jira .
When i try to bulk edit these issues, the "Edit issues" option is disabled, saying taht "NOTE: You do not have permission to edit the selected 1 issues or at least one issue has a status that forbids editing."

However, when i start edting the issues one-by-one, it works fine, so i think that proofs that i do have enough permission and the all the issues are still in a state that allows editing.

As with all "bulk edit" bugs, this is a very irritating bug, because it results in lots, lots of work.