hi bjorn,
I managed to eliminate this problem I replace <esri:draw> by <esri: DrawTool>.
for editing lines the widget works fine, but when I use the same widget for points and polygon I receive the following error message:
"Unexpected fault:
[FaultEvent fault = [RPC Fault faultString = "Unable to complete operation." faultCode = "400" faultDetail = "Error running the tool."] messageId = null type = "fault" bubbles = false cancelable = true eventPhase = 2]"
we find the widget edit polygon attached below.
Any suggestion will be very appreciated .