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R2025a Pre-release highlights
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- Your MATLAB prerelease version(You can send us the output of the ver command).
- How frequently have you had this happen?
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Just to be sure, did you run into the issue when you were using Prerelease Update 5 or was it the update “x” when you saw the issue?
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Hi, is it a known issue that the GUI is much slower than in e.g. 2024b? Will Mathworks work on this? Do I need to supply a screen capture with a comparison to show the difference?
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- your MATLAB prerelease version (ver command would be good for this)
- a screenshot or short video of the issue if possible.
- your system information, OS, memory etc..
- does it happen overtime and its gradual or is it slow from the beginning?
- is it slow only in certain configurations? (ex: docked vs undocked)
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Yes, this is what I meant!





The issue is that you need to use code section then a text gap and then a code section. You cannot use code section and then immediately a different code section: the two code sections will automatically get merged together.
I am not sure why exactly you would want two adjacent code sections, but I acknowledge that they cannot currently be created.
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I made it clear a few weeks ago that there would not be any copilot in r2025a.
(I do not know if or when such a feature will be introduced.)
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I was around for design discussions about this and advocated for it. I’m excited to see that it has shipped.

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