Not all fixed in V2021. A day later the collages I earlier created after creating a new Catalog were broken again - without further action on my part. No Windows files were touched. Rather than spending much more time attempting to fix the various Elements 2021 quirks than with actual organizing, editing, and creating, I am going back to my Elements 9 and Lightroom 5 - much more solid and reliable without the several time consuming/wasting issues (task bar, duplicate images via USB cable, now broken collages) I've had with 2021.
Yes, fewer features with the older versions, but more solid, predictable performance.
________________________________________________________________________________________ Fuji HS50EXR, Samsung S9+. Nikon Coolpix P950. Just transitioned from PSE and PE 9 to 2021