Arcpy.CreateTable_management in Python toolbox not creating table in memory

The following creates a table in memory as expected when executed in the Python window [ArcGIS Pro 2.9, Windows 10]: arcpy.CreateTable_management('memory','dataTable')

When I try to do the same thing in a Python toolbox tool (.pyt), the table does not appear to be created in memory (or anywhere else), although the call does not generate an error:

import arcpy

class Toolbox(object):
    def __init__(self):
        self.label = 'Create table in memory toolbox'
        self.tools = [CreateTable]

class CreateTable(object):
    def __init__(self):
        self.label = 'Create table in memory tool'
        self.canRunInBackground = False

    def getParameterInfo(self):
        return None

    def isLicensed(self):
        return True

    def updateParameters(self, parameters):
        return

    def updateMessages(self, parameters):
        return

    def execute(self, parameters, messages):
        arcpy.CreateTable_management('memory','dataTable')
        return

If I use a file GDB instead of memory, both approaches succeed. Insights?