[Pharo-project] Some visual artifacts in buttons (Watery 2 theme)

Hello, just in case if you not already seen it.. These artifacts (a button labels blended with background) is appear only, when you draggin a morph in hand. If you just place morph over background - no visible artifacts appear. On screenshot, the button label is blended with Pharo logo, placed on background. It seems like somewhere, it not sets an opacity values correctly for button labels, which allows you to see through the cached form (which used when you dragging morph in hand). -- Best regards, Igor Stasenko AKA sig.