Repeater fails to pull weakest signal from Comparator under certain wire layouts

When using a comparator to power a solid block, outputting the lowest signal possible (signal carries only one block before stopping), with a piece of redstone dust connected to that block, and then another piece of dust on a vertically adjacent block (another solid block one unit across, and one unit above) with a repeater on the floor level trying to pull power out of the solid block, the repeater will not be able to get the signal.