App Designer is duplicating components, once I open .mlapp

One of my student have created an App with App Designer, it worked okay at the begining, but suddenly while open .mlapp file it duplicates controls. I deleted them and it worked again, but when I open the file again, App Designer duplicates the components.

Do you know how to fix this problem?

Thank you

[Cris LaPierre]

Can you attach the mlapp file?

[Elvia Rosas]

Thank you

[Ben Holmes]

Did anyone ever get to the bottom of this? I am also seeing this issue.

[Ijab Zhan]

What version of MATLAB are you using @Ben? If you could recall what you've done with the app when you encountered this issue, like dragging a Grid into the app, etc, that would be helpful. thanks.

[Ijab Zhan]

@Elvia, the same question as for Ben. If you can provide these info, it would be useful. Thanks.

I've attached a fixed version of the app here.

[Ijab Zhan]

It could happen during reparenting, and here's the EBR: https://www.mathworks.com/support/bugreports/1918110

It has been fixed for R2019b, so I'm wondering if this is new if you're using the release after R2019b.

[Claudia De Clemente]

Has anybody solved this? I'm having the same issue with 2020a and 2021a, app designer is generating more than 200 app.UIAxes... it's a HUGE ISSUE :(

[Cris LaPierre]

Contact support and share your app with them.

Answer 1

[Mazhar Mohammed]

Hi

It's a known issue and the concerned teams are working on it.

[Ben Holmes]

Hi Mazhar, thanks for the quick response. Is there a workaround currently? This bug makes the app designer much harder to use as every time I open the app it requires several minutes of figuring out which duplicated graphical elements must be deleted.

[Greg]

Any word on this? I am having the same issue in 2020b. I have hundreds of the same menu that I have to delete every time I try to edit my app.

[Mario Malic]

Contact support to remove it for you once and for all.