Yes, LL changed the SL servers to truncate the text string fields. It was seen as a possible denial-of-service vector in Mantis 1931
, so IW was changed to match the same restriction in December of 2013. So if there was more data stored in there prior to that change, it wouldn't be possible to save the data back with changes after that date. However the storage was limited to 255 characters, so I believe it could continue to fetch up to 255, even today, if it's stored there.
In hindsight, we probably should have limited the text of both the name and description fields to 255 characters. I don't think there was any attack vectors available from this, and any thing less than 255 was not a backwards-compatible change for content, as we can see here. Both of those fields are limited to 255 characters in the database schema and so any fetch of the name or description wouldn't have returned more than that anyway, at least after a region restart. It could be that SL changed it so that it would be safe even prior to a region restart, however we could have matched that safely with max lengths of 255 and no compatibility issues with the existing content. So a very belated apology for matching the LL limits in that change 3 years ago.