search for: addwindowstackchang

...nitialMap. This function is supposed to set the window's (initial) stacking, among other things. For instance, at one point it runs: if (stackingMode != CompStackingUpdateModeNone) { Bool aboveFs; aboveFs = (stackingMode == CompStackingUpdateModeAboveFullscreen); mask |= addWindowStackChanges (w, &xwc, findSiblingBelow (w, aboveFs)); } which raises the given window on top of everything if the stacking mode is CompStackingUpdateModeAboveFullscreen. So newly-created windows are placed below full-screen ones, because they're not mentioned in that test. This might seem like a...