Blueprint becomes dirty after play with Key get display name is in script

Blueprint becomes dirty after play with Key get display name is in the script. This issue occurs even in setups where that specific node in the event graph, not necessarily attached to anything. The node make the blueprint dirty after Playing the game

Regression:
This issue occurs in 4.13, 4.14, and 4.15

1. Create a new blank project (no template or Starter content)
2. Create a new Actor class BP > Name "Test_BP" > open Test_BP
3. In details panel under input set auto receive input to Player0
4. Go to the event graph and set up the blueprint in Screenshot_01
5. Compile and save the blueprint
6. Add the Blueprint to a level
7. PIE
8. type a few letters on the keyboard then close the game
9. open Test_BP
   Results: The Blueprint is now dirty again
   Expected: The blueprint is still clean