I have a Salesforce Classic App,
 
when I switch to Lightning in "Enterprise Edition" works like a charm but, when I changed it in production Unlimited Edition all clasic html href fails in a Managed installed Package.

This is a basic example, in both environments :
Original traditional HTML in a Visualforce page ==> <a href="/apex/home">Home link</a>
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lightning changes automaically to ==> <a href="/one/one.app#/alohaRedirect/apex/home">Home link</a>
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In dev takes me to "home" ---> correct!!!
In Production Managed Package (Lightning)  show the error "Page home does not exist "