- tag 2 files
- select 3rd, non-tagged file
- press Ctrl+U, or Ctrl+L...
- confirmation dialog is shown with the buttons "selected files" * , "tagged files", "cancel"
- click the cancel button
= operation should be aborted, but it's not - Batch convert / Slide show dialog is opened and ALL files from current dir are added to the list

Two other related (and already reported) issues, still not fixed in the latest beta:
* it should be selected items IMO, perhaps even "selected item(s)" / "tagged file(s)"
BTW Key shortcut is missing for "Cancel" button (the same as for Selected files / Tagged Files).
XnView v1.97 beta 1 (probably also earlier versions), Win Vista SP2