我正在制作一个多边形剪裁器演示程序，发现了一个无法解决的问题。
所有其他浏览器都按预期显示示例 svg，但最新的 Opera 12.11（在 Windows 7 和 Mac OS X 10.6 中）显示一些奇怪的水平线。
Opera 12.11 结果：
其他浏览器（IE9、Firefox、Safari、Chrome）的结果：
我希望这是 Opera 中的一个错误，因为所有其他浏览器都显示了正确的结果，但不确定，因为当我例如。删除路径命令中的一些 Z，Opera 也显示正确的结果。
我的 SVG 可能有什么问题，还是 Opera 中的错误？
有问题的路径：
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编辑：当我将“stroke-width”从“0.80”更改为“0.81”时，Opera 显示正确的结果，但“0.85”在其他位置显示奇数水平线。真的很奇怪！