ST's HTML syntax had to change the way how CSS/JS syntax definitions are embedded within style and script tags in order to fix a core bug. It also requires changes to how those syntaxes are to be embedded. This change unfortunatelly effects all syntaxes, which inherit HTML.

Related PR: sublimehq/Packages#2831

This broke VUE syntax.

A short look at this package revealed the following lines to be obsolete or not needed at all.

A backward compatible fix was to remove the context.

An inherited syntax needs to override script-javascript-content or style-css-content only, if it wants to embed a custom CSS/JS syntax (or scope), which is not the case here.

I'd suggest to take a look at...

https://github.com/sublimehq/Packages/blob/c70117be6402c54ccf860ab8edfcba8aade46c9e/ASP/HTML%20(ASP).sublime-syntax#L37-L67

This approach might be needed for all kinds of embedded script syntaxes to ensure toggle comment is working on the first and last line properly.