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Erroneous buttons created in AppDesigner

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I have an App created in AppDesigner that keeps creating five copies of the same button whenever I open the app. After deleting and/or resaving the entries in AppDesigner, the same buttons are recreated when I open the app again.
I have edited this app on both Windows and Mac, in 2017B, 2020B and 2021A. I am seeing this issue currently on Windows 2021A, but believe I also saw it on Mac 2021A. I would ideally like to keep functionality across all versions and operating systems, but understand if this is causing the issue.
I cannot easily create a minimal example, but will try if it would be helpful.
Michael Van de Graaff
Michael Van de Graaff on 27 Sep 2021
I had a similar problem, but with EditFieldLabels rather than a button. Eventually, I got sick of it and deleted all version of the labels being duplicated, an option which is more convenient when it's just a label.
I never did find a better, and my problem did not seem to multiply as yours does
Adam Danz
Adam Danz on 29 Sep 2021
Contact tech support. In a previous question, tech support provided a function the user that solved the problem.

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Answers (1)

Reshma Nerella
Reshma Nerella on 2 Feb 2022
This bug was fixed in R2018b Update 3.
This issue might still be seen in future releases of MATLAB while editing the apps that were are created in any version before R2018b Update 3.
In your case, instead of editing the app in R2020b or R2021a, create a new one to prevent the issue.


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