Visio 2019 does not support Custom Icons?

[Croc]

I tried to create a CustomUI with a custom icon. But the attempt was unsuccessful. Visio creates a panel, but does not show the image.
For comparison, I did the same in Excel. There are no problems here. Excel shows the image.
It remains to assume that Visio can only work with imageMso, but not with image
Does anyone have experience using Custom Icons in Visio?

[Surrogate]

IMHO no way! Because we have not folder for these icons into VSDX-file format.

[Nikolay]

Yes, it is a known issue:
https://stackoverflow.com/questions/43685242/how-put-custom-icon-to-visio-document-for-custom-ribbon

You can workaround the issue with getImage and returning the image from the VBA (if there is some)

[Croc]

Thank you, Nikolay!