Suggestions for improving this as a desktop UI:
The line height can be better at 1.6-1.7. That way, there won't be any unecessary space. The padding for the trending bar should also be at 10px rather than 16px for the same reason, along with the font size of the body text at 14px.
The section for the top entries of the week should be placed in between the start of the article and the trending tab as a substitute to the advert section.
The advert sections themselves are better off placed just at the sides of the entry rather than also be in the middle of it.
As for the layout of the related entries and subentries, it'd be better if they were all small squares rather than having the first one or two rows be too spacious. Same goes to the recent videos and images sections.
The old button layout should be kept in order to make options such as requesting editorship, adding new media, adding a comment, or suggesting changes distinguishable.
The tags should be placed in the table talking about the entry's details (status, origin, type, thumbnail image). Additional references should be included in said table rather than be at the very bottom of the entry. Same goes for the section displaying the entry editors. It can be redirected through a "View all editors" button beside the details mentioning the editors who added and updated the entry.
The "Latest from" and "Latest editorial and news" sections can be placed at the side to the entry (left or right, up to you) as a small section. There's no need for the "Latest from" section, in particular, to be in the bottom of the page and have infinite scroll.