SD Card not showing up in Finder Sidebar (other removable drives do) - Big Sur

Since I upgraded to Big Sur, SD Cards inserted into my 2015 MPB 15" do not show up in the Finder Sidebar. They do appear on the desktop and and in Finder windows under my Mac.

Other removable drives (e.g. USB drives) show up and disappear when ejected as normal.

I checked in Finder Preferences and removable drives are checked on under the Sidebar items.

If an SD Card is mounted, I can drag-and-drop its icon to the sidebar. However, once ejected, its entry remains on the Sidebar. Clicking on it obviously doesn't work since the SD Card is no longer inserted/mounted.

On Catalina SD Cards used to behave like any other removable drives. That is, they would automatically appear on the Finder Sidebar when mounted, and I could eject them from there as well. After ejecting them they would automatically disappear from the Sidebar.

Anybody else experiencing this?