For Minyaa versions released before 6.2.x, the IssueView class was extended by a Minyaa Class in charge of evaluate the Permission if the Settings marked it as required.
Since 6.2.x, the Permission is now checked by a Condition directly injected in the Sub-Task panel.

This change has been done without taking in account the jira.option.BROWSE_TASK.permission.enabled property.

Workaround : All Permission Schemes have to be update in order to grant the SHOW_SUBTASK permission to allowed users.

Resolution : The inject of this Issue Tab Condition has to depend on jira.option.BROWSE_TASK.permission.enabled property.