Matlab R2020b Update 3 always freezes when closing a figure window containing any axes by using the top left closing button.
The operating system I am using is macOS Big Sur 11.1 on an Intel Mac Book Pro from mid-2017. No startup scripts are run.
On my system this can always be reproduced by opening Matlab 2020b and run the following command from the command window
The figure opens as expected but using the red close button on the top left corner to close the window, Matlab instantly freezes and a spinning ball animation is shown. Matlab must be force quit then.
There is no problem closing the figure using the command
This bug makes working with Matlab completely impossible to me. A similar behaviour could be seen on my system with previous Matlab versions like R2020a on macOS Mojave. But back then the bug was not so easy to reproduce. From time to time when closing a window belonging to Matlab it also froze.