When clicking on the arrow-icon[data-select="set-language"] of the language selection dropdown the action will break with:

Uncaught TypeError: t.dataset is undefined

The erroneous code isthis piece right here:

// Fix for select labelsthis.engine.on('click','[data-select]',()=>{conste=document.createEvent('MouseEvents');e.initMouseEvent('mousedown');this.engine.element().find(`[data-action='${this.dataset.select}']`).first().dispatchEvent(e);});

I'm guessing that thethis inside the arrow function does not refer to the actual HTMLElement of the icon.