*Steps to reproduce:*
# Create a Unity project
# Create a new Particle System (GameObject > Effects > Particle System)
# Select the newly created Particle System in the Hierarchy window
# Change the "Start Lifetime" property to a curve in the Inspector window
# Click on the "Start Lifetime" property curve to edit the curve
# Select or create any curve in the curve editor
# Click the "Remove" button in the curve editor

*Actual results:* The curve is not removed or deleted, nothing happens

*Expected results:* The curve is removed/deleted

*Reproducible with versions:* 2021.3.50f1, 2022.3.60f1, 6000.0.44f1, 6000.1.0b12, 6000.2.0a7

*Tested on (OS):* MacOS Silicon Sequoia 15.3