Itunes on Windows 11

I have loaded iTunes 12.12.7 on my new Windows 11 desktop computer. I find that I cannot add files from existing playlists to a new playlist in ways that worked on my previous Windows 10 machine. For example, suppose I start out with an empty playlist, not yet renamed. When I use the Search feature in the upper right of the screen, I get a drop-down list of songs. If I see the desired entry among the listed Songs, I previously was ably to simply drag the desired song from the search list onto the playlist which is open in iTunes. When I do this now, the file is not added to the playlist.

Also, to the right of the song in the Search list is a "...", which presents a menu. (I get the same menu with a right-click on the song entry.) The first entry on this menu is "Add to Playlist>", which presents a list of my existing playlists. I locate the desired new playlist, and click on it in this list, but nothing is added to the playlist.

The menu also offers "Copy", but after selecting this entry and returning the cursor to the open playlist, a right-click does not give any menu from which I can select "Paste". I did discover that, after doing "Copy" from the Search list, ctrl-V results in the tune being added to the new playlist. This worked for the first entry, but on subsequent selections from the Search list, the cursor returned to the Search input window, and a copy of the title of the song and other information was written there!

I am able to "cut and paste" or drag files from directories external to iTunes into the playlist. Drag and drop works fine in other Windows 11 applications I am running.

Any suggestions would be welcome. I would say that this is a drag, but that doesn't work here.