The selected topics were copied to the new category instead of being moved. I’m not sure if this is normal? Afterwards, I deleted my old topics that were in the wrong category. When I returned to my forum, all the topics I had moved to the new category had disappeared. I repeated the test with a single topic by editing it and changing its category; same result: it creates a copy of the topic in the new category, so I deleted the original topic which wasn’t in the correct category. I think there is a major problem!!! For your information, I moved topics into subcategories.
I wonder if the topics may not have actually been copied, but were still showing in the old category list because of stale state / not refreshing after the bulk category update.
One quick check would be to compare the topic ID in the URL. For example:
/t/example-topic-title/12345
If the apparent “old” and “new” topics had the same numeric ID, then they were the same topic record, not copies. In that case, deleting the one still shown in the old category would also delete it from the new category.
If the IDs were different, then that would suggest a real duplicate/copy happened, which would be a different issue.
I also wondered about the recent nested-post keyboard navigation change, but that seems to affect selected posts inside a topic rather than selected topics in the bulk topic list, so it may be unrelated.
