Artboard renaming reset
When renaming an artboard that was just created, whether from scratch or as a copy of an existing one, it appears renamed in the "Artboards" panel but not on the actual artboard's label on the workplace (visible when the Artboard tool is selected).
When switching the "Artboards" panel off (for example by switching it to the "Layers" panel), and then opening it back, we can then see the old artboard's name and rename it again. Then only it will work.
This issue happens randomly and not necessarily on every artboard created.
I noticed a similar issue was reported and closed, so I'm opening a new one.
Tudor Vedeanu commented
I've been having the same issue during (at least) the last couple of years. Now running Illustrator 24.2.3.
See the attached screenshot. The Illustrator UI displays two different names for the same artboard after I renamed it. The Artboard panel shows the new name I set, while the Properties panel displays the old name. Moreover, Illustrator exports the artboard using the old name, and also reverts completely to the old artboard name if I close and reopen the file.