Physics objects snapping back and forth on mobile

Bug Reports Engine Bugs
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#1

Repro steps:

  1. Join the following game on mobile:
    https://www.roblox.com/share?code=f1947a449e81cb46aecbcbcbd12c4266&type=ExperienceDetails&stamp=1719237291715
  2. Tap the Red block

Expected behaviour:
The ball moves down the slope and hits the barrier, staying at rest and eventually disappearing.

Actual behaviour:

A few moments after hitting the barrier, it begins a loop of clipping into it and being shoved back out, over and over, until it is automatically deleted.

Above video captured on an Android device.

Frequency: Always
First experienced: June 5th, 2024

https://devforum.roblox.com/t/ball-shaped-parts-have-jittery-physics-on-mobile-devices/3005492?u=judgy_oreo

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Ball-shaped parts have jittery physics on mobile devices
#2

Thanks for posting, we’ll take a look!

2 Likes
#3

Still occuring as of 633

#4

Hi! You’ve discovered a super interesting bug!

We’ve found that this can be reproduced on any device with an ARM processor (including MacBooks). We think there is a memory error occurring, but we’re still investigating. Hope to have a fix soon!

Thanks

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