I created one flyout button with name Start. Then I added again on Start button another flyout button with name Continue.
On button Continue I added 4 different regular buttons. So I have Start - Continue - Button.

When I want to delete one of this 4 regular buttons, when I click on them with right mouse click the menu with Delete option is not showing long enough so I have time to click on it. It shows only for a second or two and I am unable to delete this 4 buttons.