Black Overlap Artifacts around Close Button and Notifications
Updated to ubuntu 19.04 and have noticed overlapping and black artifacts around the x button and pop up notifications. These persist with Arc and Adapta themes.
I have highlighted the X at the top right corner and some images below for comparison. Please note that the issue is the black artifacts around the Close Button. Using different themes shows that there may be an overlap between the theme button and the default.
With Arc Dark Shell Theme
Without Shell Theme (default)
This is a clean 19.04 install with no extensions other than open weather and user themes.