As you can see, the descriptions of South's bids are truncated. This code starts with "lin=pn".
This is the same hand, played at another table and copied from MyHands. The descriptions are not truncated. It's my understanding that this means the human is using the download version of BBO, not the web version. The code starts with "bbo=y&lin=pn"
This hand was still active at my table (in Video Bridge, if it matters), and I exported to a tinyurl and copied from there:
As you can see, the descriptions of South's bids are right-justified and not truncated. This code starts with "sn=" and does not include "lin".
I will have to look for the examples of where increasing the diagram width helped.