Webhook JQL configuration goes missing in Firefox

Summary

The webhook JQL filter configuration goes missing only in Firefox.

Not reproducible on Chrome.

Environment

• Mozilla Firefox

Steps Support used to Reproduce

1. Open Chrome
2. Create a webhook with JQL for an issue related event :
   
3. Save the webhook
4. Open the same page on firefox ( You may need to refresh the page a few times )

Steps Customer provided to Reproduce

a) Enter a query into the webhook and save.
b) On the webhook overview hit reload / F5 in the browser -> query gone in the overview -> go to edit -> it's still there in the edit view.
c) Log out of Jira and log back in -> query gone in the overview -> go to edit -> it's gone there as well.

Expected Results

It should show the JQL configuration on the webhook overview page :

Actual Results

If using Firefox, it goes missing:

 

Notes

1. Clicking edit in firefox will clear the JQL as well which is why this is raised as Major and this can be saved:
2. Clicking edit in Chrome does not clear the JQL

Workaround

Do not use Mozilla Firefox for now.