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.
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.