Text box on slide from slideshow has background even when set transparent due to gradient

[ludoboludo]

Describe the current behavior

When setting the slide's text box to be transparent, there is actually a background due to the gradient.

Describe the expected behavior

Background should be transparent

Version information (Dawn, browsers and operating systems)

• Dawn Version: 5.0.0

Possible solution

We would most likely need to set a background: transparent; on top of the already existing background-color: transparent;.
Since gradients are applied through the background property, we would need to set it to transparent for it to work.

Additional context/screenshots