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.
It's challenging that the UI doesn't clearly state how to change the sorting order for comments in a card, and that I needed to make a google search to find a solution.
The solution is at a system level, and again makes me miss the old card view which was geared at intermediate users who've learnt and accustomed themselves to certain patterns.
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.
Actually, the issue you linked is not the same as the one being requested in this question.
The OP wanted to know how to sort comments newest to oldest in the "new issue view". The "Solution" is that it's not possible. The feature was removed when the "new issue view" was released.
The issues you linked above for voting are not related to the "new issue view". They are related to a bug in the old issue view that resets the sort order when a session ends. Since the sort order can no longer be set at all in the "new issue view", then even if we vote for the features above and they are developed, it will not help.
The issue people who have the problem described here should be voting for is:
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