Graphics card: Intel Iris Graphics 6100 1536 MB
Broken: (example: 2.80, edbf15d3c044, master, 2018-11-28, as found on the splash screen)
Short description of error
When I turn on the blender app, then left-click anywhere it appears the error. Here is an image:
However, I traceback that sequence to use cording application. But The tool button disappears like this:
This button is really important to do make.
Exact steps for others to reproduce the error
When I did "LEFT-CLICK", this error appears on the screen. It means I can't do anything to work.
Based on the default startup or an attached .blend file (as simple as possible).