Why do my character palette always blink and hide?

Can anyone help with this?

Try turning on all desired toolbars under View/Toolbars. I noticed in FM12 that the palettes are displayed depending on the function you're using (e.g., Manage Graphics, Authoring, etc.) - top right of the screen. I have all my editing toolbars turned on, then leave the mode to Manage Graphics. Everything stays and I don't have to continually re-open. Hope that helps.