diff --git a/plugin-core/src/main/java/appland/toolwindow/appmap/AppMapWindowPanel.java b/plugin-core/src/main/java/appland/toolwindow/appmap/AppMapWindowPanel.java
index 4fdd76a4..d5e5d6a6 100644
--- a/plugin-core/src/main/java/appland/toolwindow/appmap/AppMapWindowPanel.java
+++ b/plugin-core/src/main/java/appland/toolwindow/appmap/AppMapWindowPanel.java
@@ -114,6 +114,11 @@ public void dispose() {
 
     @Override
     public @Nullable Object getData(@NotNull @NonNls String dataId) {
+        // don't provide PsiFile on the EDT, but delegate to the slow providers
+        if (CommonDataKeys.PSI_FILE.is(dataId) || CommonDataKeys.NAVIGATABLE.is(dataId)) {
+            return null;
+        }
+
         if (PlatformCoreDataKeys.SLOW_DATA_PROVIDERS.is(dataId)) {
             return List.of((DataProvider) this::getDataImpl);
         }