User unable to Save or Published activity created via "Activity Designer Activities". After click on "Save" (or "Publish") button, the bottom left of the screen show "Uploading" with percentage. After a while, the screen went blank.

10-20 seconds later, user will get redirect to following page.

"Sample Payload" field (sample_payloads) size is too huge. The field is String type and can only cater max length of 65,000.

Edit the "Sample Payload" field and keep "{}" only.

Enhancement request FTASK38601 submitted to request for improve the sample payload