This did not work for me either. Specifically on the new views:
I am able to sort the order of comments on the old issue view.
In the new views, the arrow down next to the Comments is just a drop down to switch it between Comments and History (and not a toggle for sort order). That was a little misleading.
head over to the advanced settings Jira Settings -> System -> General Configuration and in the upper right is a button called "Advanced Settings". There you have a property called "jira.issue.actions.order" and this can be changed to "desc" from "asc" but will also influence the visualization of other data as also commented under the setting.
If you care about having this as a user preference, please vote for this issue: https://jira.atlassian.com/browse/JRACLOUD-5443
And/or this one, for folks who haven't given in to The Cloud:
Atlassian's been ignoring it for nearly 15 years now, probably because we're writing comments and questions in the "Community" rather than voting for the right issue.
You'd think Atlassian would have figured out how to store user preferences by now. Thousands of their customers certainly have figured it out for their own products.
Introducing Jira Cloud for Excel Here at the product integrations team at Atlassian, we are thrilled to announce the new Jira Cloud for Excel add-in! This add-in lets you export Jira data directly ...
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