"Update OTB" window strange character

There is a "&" character before the button text, I don't know if it is intended or not, but reporting it anyway

[soul4soul]

Ampersand & before a letter is the way to specify keyboard accelerators (shortcuts) in winforms. Usually this should appear with an underscore under the letter S and C in this case. It makes it so the keyboard shortcut Alt+S is the same as pressing the select button and Alt+C for the close button.

Can't explain why it's not working here but at least you know what is suppose to be happening and why it's there.

[soul4soul]

It's an issue with the DarkUI theme RobinPerris/DarkUI#42. I tested Alt+C and Alt+S still work it's a visual issue.