Some text in Wikidata items is illegible because of overlapping multiple lines. This isn't a recent problem. I'm using Firefox (kept up-to-date) and Ubuntu.

I've attached a screenshot from the item Q21094865. Interface language is set to Dutch.

It's not as bad in English, on this example, although the items are still a bit close together.

The text for kwalitatieve waardering van bron (P1480) is overlapping with laatst mogelijke datum (P1326) .