Listview - react unique key error

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Hi there,   I hope someone can enlighten me on the following error and guide me in solving it.   In Mendix 11.4 I created a nested menu (categorized menu's: menus with sub menus) The setup is as follows (nested listviews): Data View contains a List View of MenuList Each MenuList item shows a button with TopLevelName Inside each MenuList item is another List View of MenuItems Each MenuItem shows a button with ItemName The menu item is dynamically build where the menu items are buttons and the captions are enums.   When I click on a sub menu item I get the "unique key" error in the Console (Mendix Studio & browser). More specific: Warning: Each child in a list should have a unique "key" prop.%s%s See https://reactjs.org/link/warning-keys for more information.%s at ge (http://localhost:8103/dist/HTMLElement-B311UDE3.js:3:24008)   My first thought was that keys are missing or there are duplicates, but I didn't find any using the React Dev Tools. I am a bit out of options   Thanks in advance Zef  
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In 11.4 there seems to be an issue with two embedded list views giving react errors. I would suggest filing a bug report also with a replicable case at support.mendix.com.

Regards,

Ronald

 

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Thanks Ronald for answering my question

 

I will file a bug at Mendix

 

Cheers,

Zef

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