Ok, first look in the text field in your screenshot. The 'upper' option is set to File Name, as in use the file name of whatever the bubble is attached to. Second, the custom size of 1 inch seems to be working perfectly. It is just that your file names are not actually 1 inch.
Are you trying to make the bubble fit the text? Then you need to use the 'Tight Fit' option. And the style does not matter much.
Ok, first look in the text field in your screenshot. The 'upper' option is set to File Name, as in use the file name of whatever the bubble is attached to. Second, the custom size of 1 inch seems to be working perfectly. It is just that your file names are not actually 1 inch.
Are you trying to make the bubble fit the text? Then you need to use the 'Tight Fit' option. And the style does not matter much.