Can be easily reproduced by loading the following page with a Webkit/GTK based browser with cairo 1.10 and cairo 1.12:
The red, empty squares (with cairo 1.12) are meant to be filled with a red/white 1*1px checkerboard pattern... and actually are with cairo 1.10.
Might be related to bug #47266 , maybe not
As discussed on IRC this is most likely a bug in the xlib backend as it doesn't happen with WebKit2 (which uses the image backend).
<ickle> the squares are filled in at first, and in the traces.
<ickle> also missing the squiggly horizontal line
The original demo is now no longer accessible, and I haven't found an alternative gantt chart that is meant to have the checkboard pattern. Lots have the blank space where the squiggle should be, but I'm sure if that is even meant to be displayed or not.
Do you have a new URL that demonstrates the issue?
This one for example. There should be a dotted line between the two blue rhombus and the red and green box for the two bugs should have a dotted filling too.
It doesn't seem to be caused by changes in the image backend. Forcing it to use the original compositor doesn't fix the missing graphics. A similar story when forcing cairo-xlib to use fallbacks, still the graphics are not drawn. I suspect this problem is not internal to cairo.
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