Somewhere between the releases of Episerver 7.5 and latest, a small but subtle change in how the
epi-cms/contentediting/editors/SelectionEditor displays labels in associated drop downs was made.
label: item.text was replaced with
label: entities.encode(item.text) rendering in everything put in a label being encoded.
While I think some things gains on being encoded, in some use cases we need to be able to display HTML-formatted labels, hence encoding is bad.
But as it turns out, Dojo and Episerver is pretty smart, giving us the ability to create our own
SelectionEditor, implement our own functionality of
_setSelectionsAttr while inheriting the rest of the functionallity from the build-in Dojo module.
And as always, use at own risk.