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Signal & Observable [Updated]

Status: Open.

#34930 In facebook/react;

· FrameMuse opened on Oct 20, 2025

[Compiler Bug]: "This dependency may be mutated later" error is inconsistent

Status: UnconfirmedA potential issue that we haven't yet confirmed as a bugA potential issue that we haven't yet confirmed as a bug

Type: Bug

Status: Open.

#34924 In facebook/react;

· cauthmann opened on Oct 20, 2025

react devtools version for firefox is outdated

Status: UnconfirmedA potential issue that we haven't yet confirmed as a bugA potential issue that we haven't yet confirmed as a bug

Status: Open.

#34919 In facebook/react;

· scarf005 opened on Oct 20, 2025

[Compiler: suggestion] Use const for strings

Status: UnconfirmedA potential issue that we haven't yet confirmed as a bugA potential issue that we haven't yet confirmed as a bug

Status: Open.

#34917 In facebook/react;

· budarin opened on Oct 19, 2025

[Compiler Bug]: react-hooks/set-state-in-effect false positive on async function

Status: UnconfirmedA potential issue that we haven't yet confirmed as a bugA potential issue that we haven't yet confirmed as a bug

Type: Bug

Status: Open.

#34905 In facebook/react;

· printfn opened on Oct 18, 2025

[Compiler Bug]: Incorrect closure hoisting causes runtime error

Component: React Compiler

Type: Bug

Status: Open.

#34901 In facebook/react;

· zaqqaz opened on Oct 17, 2025

[Compiler Bug]: Incorrect JS output when copying and updating global variable with <code>+=</code> in <code>useEffect</code>

Status: UnconfirmedA potential issue that we haven't yet confirmed as a bugA potential issue that we haven't yet confirmed as a bug

Type: Bug

Status: Open.

#34899 In facebook/react;

· cxcorp opened on Oct 17, 2025

[Compiler Bug]: Incorrect immutability error "Error: This value cannot be modified"

Status: UnconfirmedA potential issue that we haven't yet confirmed as a bugA potential issue that we haven't yet confirmed as a bug

Type: Bug

Status: Open.

#34891 In facebook/react;

· snowystinger opened on Oct 17, 2025

[Compiler Bug]: Recursive functions seem to confuse the compiler

Status: UnconfirmedA potential issue that we haven't yet confirmed as a bugA potential issue that we haven't yet confirmed as a bug

Type: Bug

Status: Open.

#34888 In facebook/react;

· snowystinger opened on Oct 17, 2025

Bug: Flow definitions are missing for React 19

Status: UnconfirmedA potential issue that we haven't yet confirmed as a bugA potential issue that we haven't yet confirmed as a bug

Status: Open.

#34884 In facebook/react;

· Dagur opened on Oct 16, 2025

[DevTools Bug]: CSS Animation Errors When Using Devtools

Component: Developer Tools

Status: UnconfirmedA potential issue that we haven't yet confirmed as a bugA potential issue that we haven't yet confirmed as a bug

Type: Bug

Status: Open.

#34866 In facebook/react;

· SocietyNiu opened on Oct 15, 2025

[Compiler Todo]: function hoisting within jsx

Compiler: todo

Component: React Compiler

Status: Open.

#34863 In facebook/react;

· UltimateGG opened on Oct 15, 2025