Toolbar's button list, the name of buttons can't be unhide from toolbar's options.
Turn on Show Label for the individual button(s).
If that has no effect, look in Customize > Toolbars to see if labels are forced off for the whole toolbar there.
I hide label from buttons, and show in toolbar setting, the puzzle is buttons have different look between toolbar and the pop list, and leave a wide blank space before the icon. if the blank space could be hide is ok.
I am not really sure what we are talking about here.
What is in the screenshot? Is there a pop-up menu? What commands are generating it, or in it? Lots of details are left out so far which we need to understand what we're looking at, I'm afraid.
Add a toolbar to the end of another toolbar, the space is no enough, so it generates this pop list.
ABCDEFGHIJK... are buttons on the same toolbar.
It's a very complicated thing, May my english is not enough to describe it clearly.
I wanna create a toolbar with very very low height, so I created a Icon set, and it's small icon is 1x1pix, and set them to buttons, hide buttons label, now I get a toolbar with height about 12pix(although it is not low enough, and a seperator will streth it to a normal height), I use this toolbar with key sequence of buttons(because there are several menu button, so I can't hide this toolbar).
In another way, If I want use this toolbar with mouse, so I switch the labels on in toolbar setting is quick more than set in every button one by one.
As the toolbar with 1x1pix button is not low enough, so I now move it to the end of another toolbar temporarily.