diff --git a/src/vs/workbench/contrib/terminal/browser/terminalService.ts b/src/vs/workbench/contrib/terminal/browser/terminalService.ts
index fa3f5ff7bb83f1bad63836309be81e5c2eab8c91..f001095e567ff0b8e596666adccb143508fc339d 100644
--- a/src/vs/workbench/contrib/terminal/browser/terminalService.ts
+++ b/src/vs/workbench/contrib/terminal/browser/terminalService.ts
@@ -293,7 +293,11 @@ export class TerminalService implements ITerminalService {
 			if (instanceToDetach) {
 				const persistentProcessId = instanceToDetach?.persistentProcessId;
 				if (persistentProcessId && !instanceToDetach.shellLaunchConfig.isFeatureTerminal && !instanceToDetach.shellLaunchConfig.customPtyImplementation) {
-					this._terminalEditorService.detachInstance(instanceToDetach);
+					if (instanceToDetach.target === TerminalLocation.Editor) {
+						this._terminalEditorService.detachInstance(instanceToDetach);
+					} else {
+						this._terminalGroupService.getGroupForInstance(instanceToDetach)?.removeInstance(instanceToDetach);
+					}
 					await instanceToDetach.detachFromProcess();
 					await this._primaryOffProcessTerminalService?.acceptDetachInstanceReply(e.requestId, persistentProcessId);
 				} else {