Delay nodes used in a macro cause subsequent macro calls during the delay to never complete

Calling a macro that has a delay node again before the original call's delay could finish will cause the second call to be ignored when reaching the delay node. This did not occur in 4.12.5 and is new to 4.13.

Regression?: YES
Found: 3106830
Did not happen: 3039270

1. Download the attached project
2. Press Play
3. Press T and then Y immediately after
Result: The print strings signify that the macro started twice but only the first one completes
Expected: The macro should complete twice as there were two different instances of the macro being called

From Scratch:

1. Create a new project based off the Third Person Template
2. In the ThirdPersonCharacter blueprint, add an event node for any 2 keys, in this repro we'll use T and Y
3. Create a new macro with the structure shown in the attached picture
4. Have both of these keybindings call this macro
5. Press Play
6. Press T and then Y immediately after