diff -up plasma-workspace-5.21.90/lookandfeel/contents/defaults.folderview_layout plasma-workspace-5.21.90/lookandfeel/contents/defaults
--- plasma-workspace-5.21.90/lookandfeel/contents/defaults.folderview_layout	2021-05-14 16:15:40.647354536 -0500
+++ plasma-workspace-5.21.90/lookandfeel/contents/defaults	2021-05-14 16:16:21.580720452 -0500
@@ -27,3 +27,7 @@ library=org.kde.breeze
 
 [KSplash]
 Theme=org.kde.Breeze
+
+[Desktop][org.kde.plasma.desktop]
+Containment=org.kde.plasma.folder
+