Summary
When Assigning or Transitioning an issue, from the Service Desk queue view, using the Old Navigation style, the screen is greyed out and a spinning wheel stays on the screen indefinitely. The task doesn't complete on the browser but it does in the background.
A refresh is necessary to continue using JIRA. If the task is performed from the "New Navigation Style" or the default JIRA view, the task completes normally

Environment:

• Jira Service Desk Cloud
• Old Service Desk Navigation Style enabled

Steps to reproduce

1. Create a new Service Desk project in JIRA Cloud
2. Create a new issue in the project
3. Change the navigation style by clicking on: "Switch back to old navigation" on the left column
4. Click on "Assign to me" button
   Result: A spinning wheel is shown indefinitely and an error is logged in the console
   Expected: current user is assigned to issue and one can continue using JSD.

Error:

This error reads:

batch.js:12460 Uncaught TypeError: b is not a function
c @ batch.js:12460
h.onDialogFinished @ batch.js:12460
Dialog.extend._handleSubmitResponse @ batch.js:2614
Dialog.extend._handleInitialDoneResponse @ batch.js:2614
ajaxOptions.complete @ batch.js:2543
completeHandler @ batch.js:617
j @ batch.js:41
o.fireWith @ batch.js:43
c @ batch.js:167
b @ batch.js:179

Workaround:

• Use the New navigation style, by clicking on "Switch to new navigation"
• Refresh the page to resume work.