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Do not use this check in a transition, which will be triggered by a Linked Transition . (The check would still get the old status of the issue initiating the Linked Transition.)
Linked Status Validator cannot be used in the Create transition (the one which is performed, when a user creates a new issue). This is mainly due to technical reasons that at stage the 'issue linking' is not established and the validator cannot find the linked issues and also not validate it.
Example
Bug 'BF-25' has note yet bee fixed, it is still in the status 'In Progress'. When the user tries to click on 'Ok' on the corresponding test, he will get the following message:
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