Small, but not insignificant
Big changes, such as new features or substantial modifications of the UI, are always highlighted with header banners, notifications, and popups.
But Cloud Jira (and Confluence)'s UI go through constant, tiny silent changes overnight.
Things that seemingly shouldn't impact users like reordering menu items, renaming buttons, or adding borders to a table.
However, they introduce almost daily confusion. Although it's not critical, the constant "Where did this button go?" and "I could swear this was not here before" is not only frustrating- the impact on our workflows adds up over time.
Hidden workload
Usual administration tasks are impacted only briefly- the time it takes to look for the new location or name of what we need to do.
The main issue is updating User Guides. We have many guides and user documentation to teach both end users and new admins how to use the apps and keep good hygiene. These guides do not only get outdated really fast- we have no awareness of when they do! Until a user raises a question or messes something up, that is.
Additionally, Community guides, questions and answers get outdated as well. While this is understandable- the fact that official Atlassian documentation can't keep up with these changes can be a problem.
Examples
A "before and after" comparison of the action menu of pages in Confluence.
We wrote a Confluence Hygiene guide for our users, and when we announced it the following day, the "Copy" option had been renamed to "Duplicate"!
While we understand it was hilariously terrible luck, it created some confusion among users, and the extra workload of having to re-take many screenshots.

Although not as polished, I have another "before and after" comparison of the "Custom Fields" screen in "Jira Admin > Work Items". You can see both the main section and the sidebar navigation are different. And these two screenshots are a single day apart!


Solution: Detailed changelog?
We don't want to ask Atlassian to not change anything ever again (there have been enough discussions around the New Navigation as it is!)
But I'd like to know if there is any blog or daily changelog that lists minor updates like these ones. Even if it's something like a Github commit log.
I know major updates are announced all over Atlassian websites now and then... but it would be tremendously helpful to be informed of minor changes as they happen.
Perhaps this already exists and I have simply not found it yet- if that is the case, I'd be very grateful if anyone can point me in its direction!
What are your experiences with minor changes in the UI? Do you have any other suggestions or ideas?