[BUG] input_trigger_device Jump action blocked inside fort_vehicle after latest update

General Issues and Bug Reporting
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Summary

input_trigger_device with Jump action does not fire PressedEvent/ReleasedEvent when agent is inside a fort_vehicle

Please select what you are reporting on:

Verse

What Type of Bug are you experiencing?

Devices

Steps to Reproduce

  1. Place a vehicle_spawner_device and a fort_vehicle in the island
  2. Place an input_trigger_device, set Action = Jump (Spacebar)
  3. Subscribe to input_trigger_device.PressedEvent in Verse code
  4. Start the session and enter the fort_vehicle as a player
  5. Press the Jump button (Spacebar on PC / Cross on PS / A on Xbox) while inside the vehicle

Expected Result

input_trigger_device.PressedEvent should fire and send the agent, regardless of whether the player is inside a fort_vehicle or not. This behavior worked correctly before and is required for custom gameplay mechanics (e.g. handbrake systems, drift detection) built on top of fort_vehicle.

Observed Result

input_trigger_device.PressedEvent does NOT fire when the player is seated inside a fort_vehicle. The same input_trigger_device works correctly when the player is on foot. After the recent update, Jump input appears to be consumed or blocked at the vehicle level before reaching the input_trigger_device. Other actions such as Crouch, Aim, and Shoot are also blocked. Sprint action still works correctly inside the vehicle.

Platform(s)

PC, potentially all platforms

Video

Additional Notes

The video attached demonstrates the issue in two parts:

PART 1 — Jump action (Button 4):

  • In UEFN Editor: input_trigger_device is configured with Action = Jump (Button 4)
  • In-game on foot: pressing Spacebar fires PressedEvent correctly, functionality works
  • In-game inside fort_vehicle: pressing Spacebar repeatedly produces no response,
    PressedEvent never fires, no output in logs

PART 2 — Sprint action (Button 5):

  • In UEFN Editor: input_trigger_device is configured with Action = Sprint (Button 5)
  • In-game on foot: Sprint input fires PressedEvent correctly, functionality works
  • In-game inside fort_vehicle: Sprint input still fires PressedEvent correctly,
    functionality works as expected

Conclusion:
This regression was introduced in the 40.00 release of Fortnite on March 19, 2026.
Prior to this update, Jump action worked correctly inside fort_vehicle.

The following input actions are confirmed BROKEN inside fort_vehicle:

  • Jump
  • Crouch
  • Aim
  • Shoot

The following input actions are confirmed WORKING inside fort_vehicle:

  • Sprint
  • Move Forward / Backward
  • Move Left / Right

This breaks any custom gameplay mechanic that relies on input_trigger_device
with Jump action while the player is seated in a fort_vehicle
(e.g. handbrake systems, drift detection, ability activation).