Currently defaults generate custom element names like field--image or field--comment. This is something which plays very bad with Vue's kebap casing to CamelCase conversion, or better said, it does not work with it.
Double dashes should be simply avoided, a simple dash is enough.
The default custom element processors should be adjusted accordingly. This will imply a BC change for everyone relying on the default custom element processors.
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changes
Comments
Comment #3
fagoComment #5
fagoImplemented. The default article content type of standard profile does now have field-comment and field-image instead of field--comment and field--image.