This is a recent change that I cannot find a cause for. When developers are transitioning through the workflow, especially to QA Validation, JIRA is requiring them to set a resolution.
Previously, Resolution was only required when closing an issue. There are no intended resolutions for JIRA items that are "in progress." All items are intended to be resolved (closed) or unresolved (open).
I've had to create a (fake) resolution of "continue" to allow these transitions to be satisfied.
Looking at the transition to QA Validation, there are no resolution conditions, validators or post functions.
Looking at the Workflow, there doesn't appear to be anything requiring this behavior. All states can move to all states without restriction.
Can anyone offer a suggestion of additional Settings that may point to this need for a "resolution" when it is not expected to be needed?