Happening to me as well. Illustrator 25.3.1 on Big Sur. Only in illustrator. Libraries work perfectly fine in Photoshop. My current work around is to right-click a vector library item in photoshop and select Edit so that it opens in Illustrator and then I copy/paste it into the file I need it in. Definitely not ideal.
Happening to me as well. Illustrator 25.3.1 on Big Sur. Only in illustrator. Libraries work perfectly fine in Photoshop. My current work around is to right-click a vector library item in photoshop and select Edit so that it opens in Illustrator and then I copy/paste it into the file I need it in. Definitely not ideal.