I have such a problem. I allocated 22 keywords, but only a few show up when I reopen the bridge. Only by clicking on different photos in the panel, the other keywords start to appear. Before the update, the list was full and displayed. I can't quickly add keywords to new photos until I have clicked on a photo in this category beforehand, it doesn't make sense a bit. Thank you for your help.
I am answering myself because I have found a solution. The new word must be added with the + sign and not from the drop-down menu. The effect is the same, but the word added with the + sign does not disappear after the new opening of the application