In the same project, for the same issue type, I'd like to make a custom field required on a screen that appears as part of a workflow transition, and NOT required on the edit screen (but still visible/editable).
As I type this, I'm starting to think that this is a job for the behaviours plugin, but I have a number of issues with the plugin (requiring fields even when i change project/issue type and the fields don't apply) so if there's a different plugin (or native behavior) please let me know!