Ground Targetting Mode gets overriden (lose) when mouse hovering over any GUI element

Hi, when using Ground Targetting Mode (for example to place Flaming Arrow, Shadow Flare etc), the targeting circle vanishes as soon as my mouse cursor hovers over any GUI element (map, pary list, skillbar, quest tracker text, minimap, buff list...).
Would it be possible to change it so that when entering Ground Targeting Mode, the targeting mode does not lose focus to GUI elements? I have various GUI elements all over the screen and quite often want to place my ground abilities underneath them, but can't. When I click to place, let's say Shadow Flare, instead I click map or party list and Shadow Flare placing gets cancelled.
It's logical that when I enter Ground targeting Mode, I want to use the ability, not click on GUI elements.