• 当前 Bug 的表现（可附上截图）

CanvasContext.draw()或者CanvasContext.getActions()都报错

thirdScriptError

Maximum call stack size exceeded;at pages/book/editor onReady function;at api getImageInfo success callback function

RangeError: Maximum call stack size exceeded

    at a (http://127.0.0.1:10884/appservice/__dev__/WAService.js:6:1576)

    at a (http://127.0.0.1:10884/appservice/__dev__/WAService.js:6:1729)

无论是每个元素save()和restore()后，最后一步draw()，还是每一个元素draw()一次，都会报上面的错误，只有不调用draw()，才不报错