fix: disable Gemini thought signature persistence to prevent corrupted signature errors (#10554)

daniel-lxs · web-flow · commit e3c0cd64dcfe · 2026-01-08T17:36:45.000-05:00
diff --git a/src/api/providers/gemini.ts b/src/api/providers/gemini.ts
@@ -456,7 +456,10 @@ export class GeminiHandler extends BaseProvider implements SingleCompletionHandl
 	}
 
 	public getThoughtSignature(): string | undefined {
-		return this.lastThoughtSignature
+		// Disabled to prevent "Corrupted thought signature" errors on task resumption.
+		// Gemini thought signatures are session-specific and cannot be reliably reused
+		// across API calls or after task resumption from history.
+		return undefined
 	}
 
 	public getResponseId(): string | undefined {

Original file line number	Diff line number	Diff line change
`@@ -456,7 +456,10 @@ export class GeminiHandler extends BaseProvider implements SingleCompletionHandl`
`456`	`456`	`}`
`457`	`457`
`458`	`458`	`public getThoughtSignature(): string \| undefined {`
`459`		`- return this.lastThoughtSignature`
	`459`	`+ // Disabled to prevent "Corrupted thought signature" errors on task resumption.`
	`460`	`+ // Gemini thought signatures are session-specific and cannot be reliably reused`
	`461`	`+ // across API calls or after task resumption from history.`
	`462`	`+ return undefined`
`460`	`463`	`}`
`461`	`464`
`462`	`465`	`public getResponseId(): string \| undefined {`