Fix issue where sending message to stdin during non-interactive long-running process would not relinquish control back over the exit command button

webview-ui/src/utils/combineCommandSequences.ts

@@ -41,7 +41,11 @@ export function combineCommandSequences(messages: ClaudeMessage[]): ClaudeMessag
 						combinedText += `\n${COMMAND_OUTPUT_STRING}`
 						didAddOutput = true
 					}
-					combinedText += "\n" + (messages[j].text || "")
+					// handle cases where we receive empty command_output (ie when extension is relinquishing control over exit command button)
+					const output = messages[j].text || ""
+					if (output.length > 0) {
+						combinedText += "\n" + output
+					}
 				}
 				j++
 			}