Matlab R2019b gets stuck and is not responding when open in macOS 10.15.4

I update macOS to 10.15.4 but when I open the Matlab R2019b, it gets stuck and becomes no responding all the time.

Is there any compatibility problems between R2019b and 10.15.4?

Answer 1

[Bhargavi Maganuru]

MATLAB R2019b support MacOS Catalina. There are few incompatibilities when running MATLAB on macOS Catalina. For more details follow the link https://www.mathworks.com/matlabcentral/answers/489700-is-matlab-compatible-with-macos-catalina

[Li Hang]

The strange thing is that it worked normally in macOS 10.15.3 before I updatd the system. Then I try to reinstall R2019b(PS: I changed the default installation path to "/Applications/Matlab_R2019b.app" for launch convenience) and it runs without any problem at the first opening after reinstallation. But it becomes no responding just when I open it at the second time.

[Li Hang]

I find that if I change the matlab directory name in folder /''Applications'' (for example Matlab_R2019b.app to MATLAB_R2019b,app) it can start and run normally at the first opening after renaming. But it gets stuck again from the second opening.

[Bhargavi Maganuru]

Could you share the screenshot after opening MATLAB?

[Jiang Zhiping]

I also confirm the stuck problem. It seems the stuck occurs very frequently on macOS10.15.4 with MATLAB 2020a and also 2019b. The freeze usually lasts seconds to even a minute. Then it comes to normal.

[Mickey London]

Same here. Since the latest update of catalina to 10.15.4 its non-responsive to a degree it is impossible to work

Answer 2

[Bhargavi Maganuru]

There is an issue with the way Accessibility features work on macOS with MATLAB at this time.

You can follow these steps:

1. Go to System Preferences > Security & Privacy > Privacy > Accessibility. This list shows all the applications that you've given permission to use the Accessibility API. One of these applications is triggering the bug in MATLAB and causing it to hang.
2. You'll need to use a process of elimination to determine which application is preventing MATLAB from starting. It is likely to be an app that gets and sets information about other application windows.

For additional information, you can check the following ML Answer post:https://www.mathworks.com/matlabcentral/answers/480796-not-responding-on-startup-macos-mojave#answer_398840

[Xiaokai Xia]

Is there any chance that Mathworks will fix this bug in the future?

[Bowen Song]

same question here! This continues to be a problem. The problem also gets triggerd non-desterministically.