Have had 2 issues for about a year that have not been fixed despite support calls.
Issue 1: Creating a Virtual Copy in Develop Module or Library Loupe View, while MULTIPLE images are selected, will create the virtual copy and also advance to the next image instead of keeping the new virtual copy selected. Ex if I create a virtual copy of image #80, it will create #81 as the virtual copy, but then automaatically advance to select and show image #82 in the edit window.
Issue 2: When advancing through the timeline in Develop Module using the keyboard arrow keys, if you advance too quickly the image you advance to will adopt the previous image's editing preset.
Both problems happen in multiple catalogs. You can see the screen recording below for examples of each.