What happens?:
After running a QS, link 'discuss/revert batch' goes to a page that says "Edit group "N" not found"
What should have happened instead?:
You have the option to revert/discuss the batch.
Software version (skip for WMF-hosted wikis like Wikipedia):
Wikibase Cloud
Other information (browser name/version, screenshots, etc.):
This seems super important, because I do not like the idea of making batch edits without the ability to undo them.
Edit groups is described as part of QS2 at https://www.wikidata.org/wiki/Help:QuickStatements#Edit_groups
https://www.wikidata.org/wiki/Help:QuickStatements#Edit_groups
EditGroups is another external tool, not part of QuickStatements. Currently it works on Wikidata, and there is also an instance for Commons. On other Wikibase instances, it may be unavailable.
Unfortunately this feature won't work without a deployed "EditGroups" instance. I've gone ahead and made a feature request ticket for this at T330387