debug: reduce callstack flashing by showing a stale remainder of the callstack

#25605

1 files changed, 5 insertions, 0 deletions

diff --git a/src/vs/workbench/parts/debug/electron-browser/debugViewer.ts b/src/vs/workbench/parts/debug/electron-browser/debugViewer.ts
index 5450d5d5099..2c8391b709f 100644
--- a/src/vs/workbench/parts/debug/electron-browser/debugViewer.ts
+++ b/src/vs/workbench/parts/debug/electron-browser/debugViewer.ts
@@ -366,6 +366,11 @@ export class CallStackDataSource implements IDataSource {
 		if (!callStack) {
 			return [];
 		}
+		if (callStack.length === 1) {
+			// To reduce flashing of the call stack view simply append the stale call stack
+			// once we have the correct data the tree will refresh and we will no longer display it.
+			return callStack.concat(thread.getStaleCallStack().slice(1));
+		}
 
 		if (thread.stoppedDetails && thread.stoppedDetails.framesErrorMessage) {
 			return callStack.concat([thread.stoppedDetails.framesErrorMessage]);