Few Assets inside lottie are not shown and other are shown

[zeslabconnect1]

We had integrated ThorVG version in aug 2025 into our application. We are using a Lottie JSON file which renders correctly in the ThorVG web viewer, where all assets are displayed as expected. However, when we load the same file locally in our custom ThorVG viewer, some assets are missing. All other asste are shown properly .

In json various asstes are used in as base64 . Most of the assets render properly, but one specific asset is displayed only as a circle, while its actual content (a human face) is not rendered. Since this issue occurs only for a single asset, we wanted to understand how to proceed with debugging or resolving it. is there a debug which can help me . I dont want to just upgrade to latest build for now as things have baked in and i feel it could be more of an asset issue .

Could you please let us know if there are any known limitations, recommendations, or additional steps we should follow to ensure consistent rendering?

Thank you for your support.

[hermet]

@zeslabconnect1 Hi, I'm not sure. If the asset renders correctly in the ThorVG viewer, it's recommended to upgrade ThorVG to the latest version. Otherwise, we may need to identify the issue in the older version of ThorVG. You can use a specific Git tag to revert ThorVG to an older version (ideally the one you're currently using) and try to reproduce the issue locally. To do this, place the sample resource in thorvg/examples/lottie/sample.json, then run examples/Animation to see if the issue is reproducible.