We just updated JSM (data center) last weekend to 4.18.1 and started noticing that the updated date on the issues wasn't updating correctly. When I looked further into it I noticed that comments were not being included as updates anymore. To confirm this was something recent I looked at issues that were last updated before we upgraded and sure enough if a comment was the last thing that happened on the issue the updated date reflected the date of the comment. It no longer does that. I checked the release notes and I didn't see anything that suggested this was a change made on purpose.
Is this just happening on our instance? Are comments not supposed to be counted as updates to issues?