For MATLAB R2020a on Ubuntu 20.
I have attached a patch which should resolve the issue. I had to zip the file because MATLAB Answers doesn't support *.tar, so unzip the file first.
1. In MATLAB, execute the following command and make a note of its location:
2. Exit from MATLAB.
3. Copy attached "mwswingPatch2020a.tar" to "matlabroot" directory.
4. Unpack the tar file by executing the following command at the Linux command line:
>> tar xvf mwswingPatch2020a.tar
5. Start MATLAB
If for some reason there are any issues, the patch can be removed by doing the following to remove the java/patch directory which was created by the patch above:
1. From the linux command line, cd to the "matlabroot".
2. Run the following command: