Vehicle Seats - Aren't working correctly?

Hi, as of about an hour and maybe a bit ago, vehicle seats don’t seem to be behaving correctly.
We haven’t modified any code in our movement system and have encountered this issue originally on Windows 11 only but it is now effecting Mac as of today too. I’m currently using a M4 Max Macbook Pro with 64GB of ram and on Mac OS Tahoe 26.0

Reverse_Polarity who is also working on the project has no issues but is on Windows 10.

In DELVE, we are using vehicle seats within our carts and utilizing the Throttle property on the vehicle seat.
Our issue is that a recent change has made it so the cart doesn’t always move while holding the W or S key and this only happens in studio.

I have to hold W or S for a while and then my carts start moving. I can see within the vehicle seat’s properties that Throttle is changing but the cart doesn’t move.

Expected behavior

When holding the W or S key my cart should be moving forwards or backwards

Video here:

External Media
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Hi, can you please provide a repro file that demonstrates the issue? Thanks!

I’ve sent you a direct message, thank you!

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Physics system is working as expected, seems to be a bug with game logic.