Proxy 0.31.0 w/MATLAB R2026a reporting `Unrecognized function or variable`

[bviviano]

Summary

matlab-proxy 0.31.0
Python 3.11
MATLAB R2026a
Red Hat Enterprise Linux 8.10
xorg-x11-server-Xvfb-1.20.11-27.el8_10.x86_64
fluxbox-1.3.7-11.el8.x86_64

When starting the MATLAB 2026a GUI inside a browser tab, the Command Window is reporting Unrecognized function or variable 'simulink.online.internal.bootstrap'..

This does not happen on MATLAB R2025b and earlier (Tested matlab-proxy 0.31.0 with R2024a, R2024b, R2025a and R2025b).

Everything appears otherwise operational inside MATLAB 2026a.

Browser(s) used

No response

Script output

No response

[rashedmyt]

Hi @bviviano,

Thank you for using the product and for reporting this issue.

We are already aware of the problem, and it will be addressed in an upcoming update to R2026a. Please let us know if this issue is impacting your workflow or if you encounter any other problems.

Hope this helps!

[bviviano]

Thanks for the quick response. It's not interfering with anything we're doing, we just wanted to make sure we reported the problem in case it affected others or was a symptom of a larger problem.

Is there an assigned bug ID, can you attach this ticket to that bug ID so I'll get notified when it's fixed and what release, so I can update matlab-proxy then.

[bviviano]

Sorry, I didn't process before I responded that the problem is inside R2026a itself. We can close this case and we'll look for an update from MATLAB for R2026a.