Value for how long jump key is held is not updating while PIE and max jump count is 0

I'm at a loss for what is going on here. This was observered while working through the first 2 steps of UEQAT-2780 (JumpTest.PNG shows those steps). This works in 4.15.2, but not in 4.16. If you change the Jump Max Count from 0 to 1 in the class defaults of BP_QAPawn_DoubleJump, then everything works as intended.

I did bind pressing and releasing the spacebar to print string nodes and the spacebar is being picked up.

Repro:

1. Open a copy of QAGame with a 4.16 binary build.
2. Open the level TM-MultiJump
3. PIE - Viewport and press and hold the space bar.
4. Observe the Jump Key Hold Time value while holding the space bar.

Result:
Value does not change, and character does not jump.

Expected:
Value does change, maxes at ~2.0, and the character does not jump.