Matlab R2025 is unforgivably slow and buggy

MATLAB (UI) is generally buggy and slow, but R2025a and R2025b are unforgivably slow, and buggy.

Yes, startup is fast after get rid of the Java-based UI but everything is just slower. With MATLAB R2025b running on Linux (RHEL9) it can take more than one minute to run a visdiff of two files with less than 100 lines, 20 seconds to plot a pcolor of size 400x400.

I also noticed some bugs in even the most common function. e.g., "readmatrix" throws the "too many arguments error" unexpectedly. The function accepts one string argument and I provide exactly only one and I don't know what's wrong with it. You can literally reproduce this bug by running the code from the official doc. I got this error on macOS (26.0.1) but not on Linux (RHEL9) so I assume the problem is not my script.

Their customer support is super unhelpful and reporting bug is a hassle. After clicking "Request Feedback" it asks you to log out but when you click logout the UI is not responsive. You have to kill the process!

Edit: you get a warning even when running a benchmark! (macOS Tahoe 26.0.1, but not on RHEL9)

>> bench Warning: Error in state of SceneNode. Too many input arguments. > In defaulterrorcallback (line 12) In bench>bench_graphics (line 417) In bench (line 58) Warning: Error in state of SceneNode. Too many input arguments. > In defaulterrorcallback (line 12) In bench>bench_graphics (line 417) In bench (line 86)

Edit: I think get rid of the Java-based UI is good but it looks like MathWorks roll out this new UI without testing.