In the tag panel, each field has an "inverted caret" on the right; when clicked, a drop-down shows selectable options. (What is the correct name for this "inverted caret" symbol?)
For the last few versions, this inverted caret isn't visible until I resize the tag panel. Even a tiny bit larger or smaller is enough to get the panel to display all fields with this "caret".
I'd rather not need to resize to make the carets visible.
How to get the tag panel to display the inverted carets by default?