Ag-grid: Cell renderers flicker when reactNext is enabled with infinite scroll row model

[spryor]

[x] bug report => see 'Providing a Reproducible Scenario'
[] feature request => do not use Github for feature requests, see 'Customers of ag-Grid'
[] support request => see 'Requesting Community Support'

Issue:
When I set reactNext to true, cellRenderers appear to flicker during infinite scrolling. The flicker appears to occur when a new row block is requested.

Expected behaviour:
I would expect no flickering.

I need to enable reactNext since I'm performing custom logic using hooks in a custom column header component. If I remove reactNext the flickering goes away but my header components fail since I'm calling useContext inside them. The context isn't actually available so the header crashes and renders nothing.

Versions:
AgGrid 20.2.0
React: 16.8.6
Google Chrome

[spryor]

Any chance for some assistance here?

[makinggoodsoftware]

Hi,

Can you provide a reproducible scenario using one of our examples or your source code in a plunker and we will investigate?

Accepted reproducible scenarios are

• A description of the detailed steps to reproduce your behaviour in one of our examples in the docs.
• A plunker

If you decide to send us a plunkr, from any example in our website use the plunkr button in there to fork your own code by following the steps below:

• Select the framework that is appropriate to you from the drop-down
• Open it in plunker. (Use the button plunker in our example)
• Add your changes so that the behaviour is reproduced
• Save and Freeze the plunker(On the top left corner)
• Send us the link to the plunker(You can copy the URL from the browser)

If reporting a bug make sure to state.

Actual behaviour.
Expected behaviour. If possible back this up with our docs/examples if possible

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Note that this issue is getting closed, but you are welcomed to create a new issue if you can provide us with a reproducible scenario

If you are an ag-Grid Enterprise Customer, please raise this in our Zendesk support system - contact [email protected] for access. This is our primary channel for Support.

[galenlong]

Here's a plunkr that reproduces the issue: https://plnkr.co/edit/DFUgTC2c9pEt3JrSn5qb?p=preview

Whenever the columnDefs change, all cells rendered with a custom React component flicker. If reactNext is set to false, the flickering stops.