Sigma's Shield "bug" in Stadium

Anyone else notice the positioning of Sigma’s Experimental Barrier (shield) in Overwatch Stadium affects the healing for the Hero Item: De Kuipers Thesis?

The ‘hero item’ is supposed to grant 3% healing per second to allies standing near your ‘experimental barrier’ (appears to work in a 5m radius), BUT if the bottom of your shield is positioned below ground then the ‘hero item’ doesnt grant healing. I’m not sure if its intended but it has made more aware of how I position my shield in order to get any value from the ‘hero item’.