Bundled org mode, emacs started without any customizations. When changing todo state of several entries at once, either from agenda or by selection a region with entries in an org file, only last entry gets state change logged. Seems like a bug, the expectation is consistent behaviour across all selected entries.
Input file: #+TODO: TODO(!) * foo * bar * baz Select all entries, press C-t, result: #+TODO: TODO(!) * TODO foo * TODO bar * TODO baz - State "TODO" from [2024-08-20 Tue 12:09]