Vector field viewer transparency not working in lite version

[capbrown]

In the lite version, the transparency slider works for other viewers like the slice viewer, but the not for the vector field viewer. See gif (there might be unrelated compression artifacts causing a flicker)

It works as expected in sim4life.io.

As an aside, would it be possible to decrease the padding between the slider and the next box? It can make the slider end up being quite small.