Endless Runner - child bp making call to parent bp, despite the call being deleted

In the Endless Runner tutorial you create a Tile bp. In the Construction Script of Tile bp, there is scripting which randomly adds either a Blocker or Coins to the Tile bp as Child Components.

Later in the game, you create a Child bp called Corner_R, which is a Child bp, based on Tile bp. You don’t want either Blockers or Coins to appear on the Corner_R bp. So, following the Video instructions, you simply delete the call to the Parent bp in the Construction Script.

Now when you compile the Corner_R bp, no Blockers or Coins should appear
.
This works in many earlier versions of UE4, (eg: 4.12 and 4.16). This does NOT work in latter versions (eg: 4.19.2 and 4.20.1) The Blockers and Coins still appear.

Tthis would seem to indicate that the Child bp is still somehow managing to call the Parent bp’s Construction Script, despite that call having been deleted. What is even weirder, if I load a version of Endless Runner created in 4.12 into 4.20.1, it functions properly - no Blockers or Coins appear on Corner_R.

What’s going on please ???

Did you not override the constructor in the corner r BP?