In Devonthink 4.2, when the Documents section of See Also is hidden by dragging the divider between Groups and Documents to the bottom of the window, it can be difficult to get the cursor over the one pixel wide line at the bottom of the inspector to drag up and reopen the documents section.
The recent visual redesign to Liquid Glass may be contributing. The challenge is that when the mouse is moved to the bottom of the inspector, the cursor can show a window resize icon but moving the cursor a very small amount, about a pixel, shows a slightly different cursor which allows for moving the documents pane back into view. I am a very experienced DEVONthink and macOS user and found this somewhat difficult to figure out. Here are some screenshots showing the very subtle difference.
