SVGWEB: moveToBack () throws an error if object has no sibling

[OldGuru]

If an object is the only object in a Group, calling its moveToBack() method throws error "Invalid child passed to insertBefore". Sometimes, instead of issuing the error, script becomes non-responsive and the drawn shape is not rendered. (test case is attached; the paths to SVGWEB and dojo.js should be adjusted.)

The error occurs in the following snippet in SVGWEB: get an index position for where refChild is

var findResults = this._findChild(refChild); #### findResults is null although refChild is an object #### if (findResults === null) {

TODO: Throw the correct DOM error instead

throw new Error('Invalid child passed to insertBefore');

}

[Eugene Lazutkin]

Bumping from non-existant 1.5.1 to 1.6.

[Eugene Lazutkin]

Shouldn't it be filed with SVGWEB?