HTML hyperlink button image problem in v13

[rmvanderlinden]

In v12 we had a default hyperlink icon (button like) which has been changed into class diagram icon (not really button like). May be this was on purpose in version 13, so I looked for an alternative. There seems not to be a default configuration item for this so I changed the appearance of the icon. Unfortunately the description text disappears then  . So I entered an extra text (double work) behind my changed icon. When I export this to HTML, my chosen icon is replace by the default class diagram icon again  .
I assume this is a bug.