Puntuado con 5 de 5 estrellas

When entering Customize Toolbar mode, lots of buttons lost their icons (empty), they are: Forward, Delete, Print, Mark, Stop, File, Archive, Next.
Their icons are properly restored after exiting Customize, but using them blindly while being in this mode is hard.

Esta valoración es de una versión anterior del complemento (0.4.6).  Este usuario tiene otras valoraciones de este complemento.

Right, I forgot about customize mode. Should be working fine now.