Glyph of Power Word: Barrier: Increases the healing received while under the Barrier by 10%.
This glyph seems a bit glitchy. While under barrier the glyphs buff ticks on/off, and when barrier fades it remains on with no duration until you move. So in any situation where you can sit a group still, you can get 10%+ healing from all sources until you have to move. Definitely not a visual error either.