Could you please let me know is there a way to unlink or delete an issue linked into a Release roadmap?
I created a Release with stages, add an existing issue but I can't edit or unlink. There is only the option to "add issue".
Welcome to the community! If you are referring to Atlassians Roadmap it would need to be excluded from the underlying filter. If it is related to a third party plug in, as there are many, it maybe best to reach out to the developer directly. Some vendors have members on community but not all.