Bug: Simulink 2019b crashes when accessing plot

On OSX (latest version), Simulink 2019b repeatedly crashes when accessing a plotted scope output.

The model is basic: a step connected to a scope.

The plot duration is short at 10 ms.

The plot itself is plotted fine. But, any action (zooming, moving the graph inside the plot) crashes Matlab and Simulink immediately.

This occurs repeatedly, after multiple restarts and such.

Clearly this is a bug of some kind. Has anyone experienced this? Is there a workaround?

[Walter Roberson]

Have you upgraded to Update 4 yet? Some Catalina problems got resolved in that upgrade

[John]

Thanks for the thought. I updated to Update 4, with no change; the issue persists.

The model is attached. As can be seen, there is practically nothing there...

[Walter Roberson]

I am not running Catalina so I cannot test this.

[John]

Thanks Walter. This occured on Mojave as well. I updated to Catalina, and the issue persisted.

[rodolfo Baldivieso Monasterios]

Happened to me as well, on both Mojave and Catalina with R2018b and R2019b respectively.

[Walter Roberson]

Has anyone happened to test this with R2019b Update 4 or Update 5 ?

[Madhur Tiwari]

My simulink is still crashing when accesing plots via scope on 2020a and Catalina.

[Nan Chen]

I tried the newest r2020b update 1 with the catalina 10.15.7 system on 23 Oct. 2020, and the problem still happens. So I have to use my windows matlab again.

[Patrick Wais]

Similar problem on Catalina

My Simulink crashes when I click into the scope after opening

The plot in the scope is fine and I can see it, but further zooming etc. leads to a freeze

Dont know what to do

[nivek88]

Update 3 of r2020b still doesn't show any progress to this :(

Using apps like Magnet or BetterTouchTool for window arrangement should be capable of working with Matlab.

I either have to disable any window managing tool or work with r2017b.

That's sad!

Answer 1

[Nan Chen]

I think I have found the reason. That is when you are using some window arrangement tools like MagNet or BetterSnapTool, it will cause the simulink freezed when you access the scope plot. Once I quit the BetterSnapTool, the problem is not happened. It's really strange.

There is a way that you don't have to quit the BetterSnapTool. Just disable it for matlab, and the simulink will work well as well as other apps can using BetterSnapTool as before.

Environment: R2020b and Big Sur 11.01

[nivek88]

Especially for Matlab figures a window snapping tool is quite handy. Window managing on macOS has always been difficult and these apps are very useful for that. But yeah, you have to decide and make the cut for either of the options: no window snapping or r2017b.

So, why pay for newer software? Stick to r2017b!

Answer 2

[Madhur Tiwari]

Try this link:

https://www.mathworks.com/matlabcentral/answers/422244-why-do-buttons-apps-or-the-editor-in-matlab-respond-slowly-or-hang-on-macos#comment_841687

Also, I recommend turning off all types of window snapping apps. Even the ones that are not popular or mentiioned in the discussions. I was using Cinch app and removing it solved the plotting issue.

[Zain Siddavatam]

I agree, for some reason MATLAB doesn't work well with window snappers