this edit changed Node History: 4290358711 | OpenStreetMap
specifically it changed playground=rotating-seesaw to playground=rotating_seesaw
you can check by going to Changeset: 177778720 | OpenStreetMap and looking on list of edited objects, listed at bottom of the sidebar when you open changeset
in this case changeset contains one object and it looks like this:

on Node: 4290358711 | OpenStreetMap page you can press history link
to obtain Node History: 4290358711 | OpenStreetMap overview, and look how tags/position changed (note: relation membership is sadly not shown on history pages, but in this edit relations were not edited, so it should not be a problem).
You can also look for example at achavi - Augmented OSM Change Viewer [attic]
which shows changes to tags and geometries in readable format. Sometimes fails for large or just made edits, but often works.
In such case discussion before edits is not needed, see advise given at Define, check and (automated) correct string-values for the tag "colour" (for buildings, ...) - #12 by SomeoneElse and Automated Edits code of conduct - OpenStreetMap Wiki - this is linked from changeset tags
is there some reason why you have not looked at them before starting a new thread?
(it is possible to argue that such edit is bad for reasons, and there are possible failure modes*, or that linked content is not relevant, maybe bot edit policy should be changed, but questions were about either quite basic use of OSM interface or about already answered questions so I answered those)
*and yes, human editing also has failure modes
In the future, please read changeset comment and changeset tags before bothering me or other OSM contributors.