[BUG] Minimap docking in city/indoor/caves
 

I've also tried "Minimap Dock Always", same result. When I manually adjust the docking size, it appears for a moment, then disappears again leaving the shadow.

Map works fine in the world, just not when you enter something (city/cave/etc.)

That looks a little dark, but normal. Right click the Carb map, select minimap and see what the Transparency slider is set to.

The Blizzard minimap is a special game generated graphic frame that shows detail art and tracking dots. Addons cannot read tracking dots, so for a player to see tracking dots on the Carb map, we have to put the minimap into the Carb map. We make the map 50% transparent by default, which allows you to see the Carb map through it. In indoor areas, the minimap transparency is buggy (it will randomly change), so we dock the minimap in a corner and set it to 100%, so it is fully opaque.

Already tried that. Just become solid black. It's working again for now, so no clue what's going on. Just seems to happen randomly.