I recently updated to 19.04 and noticed several visual Artifacts when using themes other than the default(Arc and Adapta). These artifacts appear on the "Close/X" Button and when notifications pop up. It appears as though there are two icons over lapping each other.Screenshot from 2019-08-21 12-51-21.pngScreenshot from 2019-08-21 12-51-40.png

Not sure if this is a bug on ubuntu side or the theme provider.