[QGIS-Developer] Crash for signal layerOrderChanged

[Luiz Motta]

Hi,

I need get the signal when have change of layers order of legend.

I tried use the signal of  layerOrderChanged, but, crash QGIS.
Version: 3.4
Code 4a4b62e <https://github.com/qgis/QGIS/commit/4a4b62e>
OS: Kubuntu 18.04

I used the Terminal Python:

def changeOrder():
    print('Change order')

root = QgsProject.instance().layerTreeRoot()

root.layerOrderChanged.connect(changeOrder) # Crash for normal layer

root.customLayerOrderChanged.connect(changeOrder) # None crash for normal
layer

It is a Bug ?

What is a custom layer ?
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