Overriding QCPGraph::selectTest breaks the selection

[naquad]

Versions

Python: 3.10.8
PyQt5: 5.15.7
PyQt5-sip: 12.11.0
QCustomPlot_PyQt5: 2.1.1.1

Description

I've tried to subclass QCPGraph to add extra handling for selection but found that overriding selectTest() method breaks the selection completely.

Test case

#!/usr/bin/env python3

from PyQt5.QtCore import Qt
from PyQt5.QtGui import QPen, QColor
from PyQt5.QtWidgets import QMainWindow, QApplication
import QCustomPlot_PyQt5 as qcp

class CustomGraph(qcp.QCPGraph):
    def selectTest(self, *args): # I've also tried with the signature, no luck
        return super().selectTest(*args)

app = QApplication([])

win = QMainWindow()
win.setWindowTitle('Test')
win.setMinimumSize(1024, 768)

plot = qcp.QCustomPlot()
plot.setInteraction(qcp.QCP.iSelectPlottables, True)

data = list(range(1, 100))
graph = CustomGraph(plot.xAxis, plot.yAxis)
graph.setPen(QPen(QColor(Qt.red), 10))
graph.setData(data, data)

win.setCentralWidget(plot)
win.show()
app.exec_()

Expected behavior

Clicks select the plottable.

Actual behavior

No selection happens.

A note: while the click selection is broken, the rect selection is working somehow.