"Memory access out of bounds" error on Chrome Mobile

Description

Hi!

Since last week we have been experimenting some errors on different projects that were working fine before. This is only happening on chrome mobile. All other browsers I have tested are working fine. Here’s the error msg I am getting in the console:

I am not sure this is is strictly from model viewer or from Chrome - WASM while trying to decompress Draco.

Live Demo

Here are some example links of pages that were working and now are experimenting this error: Live:

• https://molecularweb.epfl.ch/modules/atomic-structures/protein-interactions/
• https://molecularweb.epfl.ch/modules/biological-assemblies/ribosome/ribosome.html
• https://1gd2.glitch.me/

Code:

• https://github.com/fcor/molecular-mirror-app/blob/master/modules/biological-assemblies/ribosome/ribosome3d.html
• https://glitch.com/edit/#!/1gd2

Version

• model-viewer: v1.7.2

Browser Affected

• Chrome, version: 91.0.4472.101
• Edge
• Firefox
• IE
• Safari

OS

• Android
• iOS
• Linux
• MacOS
• Windows

AR

• WebXR
• SceneViewer
• QuickLook

[elalish]

Thanks, I have a repro now too, Pixel 4 Android 11, Chrome 91. Chrome 90 seems fine. We’re looking into it with the Chrome team now.

[elalish]

And it’s a static property, so don’t forget this line: ModelViewerElement = self.ModelViewerElement || {}; https://modelviewer.dev/examples/loading/#dracoSupport