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This behavior has been resolved and deployed to the production environment as of 3/26/25.
Instead, it should prevent the option from being clicked more than once.
No workaround exists at this time.
Prerequisite: A course with a module.
Select to add an item to a module.
Select to create a new assignment, quiz, page, etc, and give it a name.
Rapidly spam the “Add Item” button.
Notice it creates multiple duplicate items.
CNVS-65410
Known issues indicate notable behaviors that have been escalated to the Canvas engineering team. Known issues are not a guarantee for an immediate resolution. This document is for informational purposes only and does not replace the Support process. If you are encountering the behavior outlined in this document, please ensure you have submitted a Support case (per your institution's escalation process) so Canvas Support can adequately gauge the overall customer impact and prioritize appropriately.
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