Cloning an R15 rig parented to Workspace randomly produces a deformed clone: head merges into torso, limbs shrink/collapse (see images). Worked fine from 2024 until a few days ago, no changes on our side.
Repro:
Videos:
Expected behavior
The clone should be identical to the original rig.
A private message is associated with this bug report
Quick update, even though AvatarJointUpgrade is set to āDisabledā our rigs have been transformed and our game is completely broken now instead of having Legacy Motor6D:
AvatarJointUpgrade is disabled because the application of all 3,000 accessories in our game were broken, basically accessory imports were broken & we couldnāt put in accessories at all, as they wouldnāt attach anymore. We have 1,000 skins using the old Motor6D rig but now theyāve been merged into this glitchy bug problem I think?
Hi! Are you saying that with AJU disabled, youāre still getting RigidConstraints produced instead of Motor6Ds?
Hey! After analyzing it, it seems like lots of instances have been automatically pasted into all rigs over a month ago on the 2nd phase rollout. (but I canāt confirm it 100%)
And now starting Yesterday/ a few days ago, rigs tend to glitch out when copy pasting
In the private message Iāve attached a few of the broken poses such as āLeg Stretchedā & āFolded Bodyā
Hey, also accessories are a different issue, I could make a different bug-report on it, so things wonāt get mixed up.
This bug here is the deformation & breaking of R15 rigs on cloning
I have just observed a lot of NoCollisionConstraints which the engine seems to have automatically added
And something mustāve resulted in this new bug:
Thereās also around 300-500 humanoids in the place, if thatās relevant in any way
Hi sayercito,
Iāve tried reproducing the bug with 300-500 clones and am unable to reproduce the bug. Are you still experiencing this?
Best,
yungzrk
Hey! I was about to try cloning rigs again, and yes it happened on the first try.
Iāve also seen other people report it but it seems to happen less severely & much rarer:
It should be noted once you start a playtest it seemingly looks normal (besides the head gap):
Reopening studio also results in it being reverted to almost normal:
It is a problem in the futher development of skins, I might try making a new skin development place etc
I could potentially add you to team-create in our group as it seems to have a 100% repro success rate
When downloading a .rbxl of the place file thereās no issue. But when publishing the place to another experience thereās suddenly the bug again
Ok, thank you for this info sayercito! Are you fully blocked at this point, or can you workaround with the skin development place?
I will reach out via DMs if we want to test via TeamCreate.
Best,
yungzrk
Hey! Could you join this group:
Iāve made a repro place + repro role for you
I canāt contact you on DevForum dms for some reason, my Discord tag is @sayer80
In this place called āyungzrk REPROā https://www.roblox.com/games/99282947013696/yungzrk-REPRO
You are able to clone different rigs.
The same rig will usually produce the same bug, unless uploaded to a different place
Some rigs will have Accessory issues, but those are not part of the bug & an easy fix for me.
E.g..
I think this might affect the entire Roblox RIG System, as Iāve seen the leg stretch happened to someone else:
But for some reason it happens extremely often in our group experience, whereas very rarely to others
I also suspect that it mightāve not started happening until around the 11th of July, as I have heard of no problems prior to the 12th of July
Update:
So it must be something related to this property
Even with Retargeting = Disabled & AvatarJointUpgrade = Disabled, this issue occurs. Only AutomaticScaling has an influence. I think a recent change mustāve broken it with a racing condition on legacy Motor6D humanoids
I donāt think itās related, but I found out that āEnabledSkinningā (v728) has been added to all types of Welds & Motor6D recently. There couldāve been some underlying rendering changes. But toggling it off does nothing
Can you also share that repro place with me? Iām also taking a look and havenāt been able to reproduce the issue. Iām on v731.
Hey! Iāve added you to the place
After cloning 10 different baby rigs thereās a high likelihood that this deformation bug has been able to be reproduced
It seems to be rare to normal R15 rigs, but for some reason my places have a very high bug-rate
Edit:
And in the past it didnāt happen at all. Not even rarely
I would appreciate if it could get fixed soon, the update on our game is delayed until we can clone the skins without them breaking & finish the last few ones
It must be something with āAutomaticScalingEnabledā
Also you can clone as many rigs as youād like! Itās an extra place for you
Turns out this particular issue can happen regardless of AutomaticScalingEnabled
(not to be mixed up with the āextendedā limb issue attributed to AutomaticScalingEnabled)
(2 bugs)
Edit: Iāve restarted studio and it seems to not deform, weird maybe a 2nd rendering glitch where AutomaticScaling is still enabled until you restart
Edit 2: it seems to happen to random skins, even with AutomaticScalingEnabled = false, restarting studio seems to select random skins that this bug happens to
I managed to find a middle-ground after analyzing & experimenting
I can turn off āAutomaticScalingEnabledā & copy paste the rigs. And turn it back on for production
Edit: It causes Accessories to have the wrong āOriginalSizeā because of no AutomaticScaling, turning it back on for production suddenly I need to resize all accessories put on new skins (extra work due to the bug)
And if it still deforms I restart Roblox Studio until it doesnāt deform anymore on cloning
In the end there seem to be 2 bugs:
