Skinned meshes not rendering properly given the position of the bones

Reproduction Steps
open repro file attached
You’ll find that the red healthbar in the left arm of the character is not rendering in the correct location given the position of the bones.
If you delete the bones, you’ll find the healthbar moves it its proper location.
if you update the location of the meshpart by moving it, you’ll see it takes its proper position, but this reset if you copy&paste the meshpart.

Expected Behavior
I expect the red healthbar on the character to be in the correct positions and orientation given the location of the bones.

Actual Behavior

Here’s a video, you can see this issue ceasing to occur once I delete the bones.

Issue Area: Engine
Issue Type: Display
Impact: High
Frequency: Constantly
Date First Experienced: 2021-06-15 11:06:00 (-05:00)
Date Last Experienced: 2021-06-15 12:06:00 (-05:00)
A private message is associated with this bug report

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We started receiving reports of this as well in Royale High as of about an hour ago. Likely related, since it has been working as intended until this afternoon.

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Can you describe specifically what is happening in Royal High? Thanks.

My deform rigs are completely messed up from this update.
SI5fS3EZ

Meshes in general are broken. Another new issue:

In addition, TweenService does not cancel anymore?

Basically, this newest update sucks.

The issue in my case isn’t related or new.
But I did get a report from another friend about having similar problems, so I’ll link him to this thread.

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Can you tell me the place this is effecting?

I can confirm that whatever update ROBLOX pulled last night had messed up the skinned mesh rig. It was fine before I went to bed.

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Yeah, just encountered the same issue in my own game. Clone said it seems to have to do with the part’s size, which is likely, since I believe the rig was scaled down at some point. We reimported the same blend (possibly pre-scaled? I wasn’t involved) and the issue was solved. Regardless, the issue is with the client suddenly not working with rigs that previously worked fine. Well, fine according to Roblox’s mesh deformation standards, which as of now are very low, but you understand what I mean.

Can you give me a list of place ids in the Royal High universe?

I’ve also observed something which might be related to this issue.

There was a bug(?) that allowed us to fatten/shrink a mesh by making the physical size of it smaller without scaling the bone positions with it. This “hint” mesh looked something like this before:

But now it looks like this:

The bones are still in the previous positions:

I provided a repro model of this in a private message @Sir_Bedevere.

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We are rolling back this chance, you should see things return to normal soon. I will be following up to get repro cases shortly. Thanks for your patience!

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We’re observing a similar issue with our custom bodies in Crown Academy that have mesh deformation.

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Somewhat related, this update also caused 90% of my players to crash. The recent rollback fixed it

I’ve confirmed this issue has been fixed in my case

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Multiple. Here is a list:
https://www.roblox.com/games/6722284015/Pistol-1v1-Alpha

https://www.roblox.com/games/5081773298/No-Scope-Sniping

(Closed, but it happens here too)
https://www.roblox.com/games/6158075274/Caliber-READ-DESCRIPTION

https://www.roblox.com/games/6407649031/No-Scope-Arcade

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Yeah, it’s very irritating. Is it the bones not replicating properly? I haven’t look into it very deeply.

I don’t think it’s a replication issue, there’s no network activity going on here.
It’s more an issue of the geometry failing to invalidate and refresh properly.

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We saw the same issue with our mounts
https://i.gyazo.com/ccfc5dc2f0cb85f96f45629cc049ba2b.mp4

Seems to be resolved now.

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