The background seems to have a different funky pattern every time I open it.
The line with the white around it was drawn with the brush tool. Instead of a circle of color, the brush is a circle of color with a white box around it. Sometimes it'll draw one color while going up and another color while going down. The pencil tool also picks one color to draw with seemingly at random and I cannot change it unless I close the image editor and reopen it.
I've tried uninstalling and reinstalling Construct several times, but it makes no difference.