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Double renders #960

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dsathyakumar opened this issue Apr 8, 2021 · 4 comments
Closed

Double renders #960

dsathyakumar opened this issue Apr 8, 2021 · 4 comments
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@dsathyakumar
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Hi,

I'm seeing components being rendered twice upon setting the initial state. Is this the intended behavior for Functional Components?

https://codesandbox.io/s/festive-shtern-c1rz3?fontsize=14&hidenavigation=1&theme=dark
@dsathyakumar
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The console.logs for and get logged twice. Is this behavior intended ?
Can't the initial state be used in the 1st render itself ?

@bryan-hunter
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there is a fix in place, but it's behind a feature flag - see #314

apparently there's an edge case they are resolving before releasing it fully, but you can patch-package to expose that feature flag for yourself and turn it on.

@drarmstr drarmstr added the duplicate This issue or pull request already exists label Apr 12, 2021
@drarmstr
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Duplicate of #820

@drarmstr drarmstr marked this as a duplicate of #820 Apr 12, 2021
@drarmstr
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The initial render is also addressed with experimental version of React with Concurrent Mode enabled.

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@drarmstr @dsathyakumar @bryan-hunter