Impossible to use the chair_device when physics is enabled

Summary

If physics is enabled in the project, the chair_device cannot be used. The player cannot interact with the chair, so sitting on it is impossible. Even through Verse, the Seat method cannot be used to force the player to sit.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Devices

Steps to Reproduce

Create a project with physics enabled, add a chair device, and then try to sit on it.

Expected Result

Player is seated on the chair

Observed Result

Nothing happend, there is no ui to sit on the chair

Platform(s)

All

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I’m still having this issue…is there any fix planned? Thanks.

I can confirm the problem still exists, and it’s been almost 6 months and the problem still hasn’t been fixed.

FORT-963421 has been ‘Closed’. This issue won’t be fixed—please see examples of why this may be the case.

Is there a fix? I want to use chair device with physics in my project.

Hi @Rufhig and all

When using the UEFN Feature Example

Verse Stand-Up Comedy Club Template in Unreal Editor for Fortnite | Fortnite Documentation | Epic Developer Community

the Chair Device documentation

Using Chair Devices in Fortnite Creative | Fortnite Documentation | Epic Developer Community

Enable Physics in Example project

  1. Add Physics Component: Select the prop in your viewport. In the Details panel, click + Add, and search for and select Fort Physics.

  2. Configure Simulation: Within the Fort Physics component settings, you can:

    • Enable/Disable Simulation: Toggles physics on or off.

    • Simulate Physics: Check this box to allow the object to fall or move.

    • Override Mass: Adjust the weight of the object in kilograms.

    • Gravity: Toggle gravity on or off for the object.

    • Collision: Ensure the object has “Simple Collision” enabled to interact properly

  3. When you run the example the chair_device works with Physics is enabled

  4. You can sit on a chair and press key to exit

This is why there is no bug to fix/correct as the UEFN Example as described in documentation works

Originally when April 2025 the thread was started the Physics was beta meaning THAT TIME it would not work as it was BETA Now its production chair/physics in the example now works

REPEAT AGAIN THIS IS WORKING AS DESCRIBED ABOVE AND RETESTED IN 39.40.

ALL PHYSICS MUST BE REIMPORTED INTO AN ISLAND CREATED IN 39.40

This wont work on islands created before 39.40 you must import all your assets again.

@Jimbohalo10 ( @Flak ) I don`t understand what you mean… It is not possible to enable “Fort Physics” for devices like the chair device and this is in my case (and I think for the others in this thread) not necessary… FACT is, that enabling the physics in the project settings make it IMPOSSIBLE to interact with the chair device and I can`t understand why Epic do not want to fix that critical bug!?

FACT is on ISLANDS created in 39.40 this works, it wont work in BETA Physics before 39.40

Make a new island 39.40 and import your assets using the Production version!

Migrating Template Assets in Unreal Editor for Fortnite | Fortnite Documentation | Epic Developer Community

Maybe it should be fixed in the existing islands

1 Like

Hi @latunda .

Agreed, but this is been my request since 29.60 a lot of islands broke in 30.00 and

My great request is that they test 40.00 with older islands, because we cannot downgrade server software. Will the publishing software still be compatible with earlier islands?

Hi @Jimbohalo10,

thanks for your answer. But fact is also, that beta physics work with all other devices in my map only the chair device does not - and I ask why is this not possible to fix? Because i have been creating for more than one year now and I want to release the map in a few months.

Making a new islands and importing assets is no solution, because all the assets and rules I have been placed in the map over the year would be away.

So I hope Epic will fix that also for maps created before 39.40, otherweise beta physics should only availible for maps created after 39.40 and not older!

best regards from Germany

1 Like

v. 39.50: still not work for island created before v. 39.40 :slightly_frowning_face:

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