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Hi @Kamilet @anzelo

Upon attempting to reproduce the issue internally, we indeed confirmed the phenomenon where Bezier curves do not display. This issue can occur when a cmo3 file created and saved with 5.2.00 beta1 is opened in Cubism Editor version 5.1 or earlier.

This is mentioned in the warning dialog displayed when opening files in older versions of the editor, stating that files created or saved in newer versions may not open correctly and could become corrupted in older versions. This case falls under that warning.

We apologize for the inconvenience, but to prevent file corruption, please avoid loading cmo3 files created with 5.2.00 beta1 in older versions of the Cubism Editor. If you have already saved corrupted files in Cubism Editor 5.1, please retrieve the files from the automatic backup folder of Cubism Editor 5.2 beta and use Cubism Editor 5.2 for your work.
https://docs.live2d.com/en/cubism-editor-manual/autosave/

Hello @Ikedada ,

Thanks for using our product.

This is occurring because the R3 fix added a process to restore parameter values to the CubismModel.
After manipulating a parameter value in Inspector and updating the vertex information, it was restored with the value previously stored by CubismParameterStore, so the Inspector slider did not reflect the result of the manipulation.
This will be fixed in the next SDK.

This can be avoided by adding the following processing to the CubismParametersInspectorInspector.OnInspecotrGUI().

            if (didParametersChange)
            {
                var parameterStore = (target as Component)?.GetComponent<CubismParameterStore>();
                if (parameterStore != null)
                {
                    parameterStore.SaveParameters();
                }

                (target as Component)
                    .FindCubismModel()
                    .ForceUpdateNow();
            }

Best regards.