Concatenated enum values in generated html2

When I generated htm2, I get concatenated enum values, i.e.: the first enum values displays fine. The second enum values has the first enum's values prepended to its values. And the last enum has all the other enum values preprended to it.

I'm very new to OpenAPI, but would appreciate the help.

I logged this issue for it:
https://github.com/swagger-api/swagger-ui/issues/5394