How to create an automatic/custom height v-navigation-drawer? (v3)

[Sjoerd82]

I have a theme selector that drops down from the top of the screen. However, it either pushes down the content below it too much (256px), or when "rail" is set, too little.

Can this amount be set somewhere, 256 seems to be a magic number. I've tried setting height to auto, though this only reduces the height of the nav-bar, not the total height.

    <v-navigation-drawer
        v-if="themeSelector"
        style="height:auto;"
        location="top"
        rail
    >
       Theme selection goodness, about 120px high.
    </v-navigation-drawer>

And another thing, this might be a bug. "top" is not a valid value for location, though it probably should be.

Visual explanation:

[Sjoerd82]

FYI; "top" is now a valid location values per v3.1.3. #16543. Remains that it would still be nice if we could influence the height.