Upgrading from v 5.0 to v 5.0.6 caused error in displaying Description on an issue.

[Kasper Bakmann]

When viewing an Issue in JIRA the description field is displaying:

Unable to render content due to system error: com.atlassian.renderer.v2.RenderMode.renderEmbeddedObjects()Z

When editing the original description is displayed.

[Kasper Bakmann]

Thank you Penny ... I ve already raised a support ticket but published it here on answers aswell.

[Kasper Bakmann]

It is happening for all issues. The description is plain text.

[Penny Wyatt (On Leave to July 2021)]

OK, there goes that theory.

I recommend raising a support ticket for this on https://support.atlassian.com . It sounds pretty serious and the Support team will be able to work with you to sort it out ASAP. Thanks.

[Penny Wyatt (On Leave to July 2021)]

Is this happening for all issues or just one in particular?

Does the troublesome description contain any embedded objects, such as flash files? (e.g. !myfile.swf! in the wiki markup).