When the notes list preview style is not hiding attachments, then two issues are apparent:
First is when you expand a collapsed section of a note that contains an image, e.g. in the “Welcome to the beta!” note with the folded section. When you expand that section, a duplicate of the panda bear image temporarily appears (for about 1-2 seconds) in the notes list.
Second is that whenever you stop typing in the main editor for a note that contains any images, then the image(s) in the notes list are annoyingly “flashed” during the save. This second issue also exists in Bear 1.