In Dolphin 7 stable:
If you move the Blog block to a different column (that has a different width), the outside box of the blog block adjusts to fit the new column, but the text itself does not (so you get either text going outside the box, or text that line breaks far too early.
The width of the text area is set is as 576 px. But that is just what the width happens to be in the non-adjusted download. You need to change that width from "576 px" to "100%" so that regardless of how wide the column is, the text expands or contracts.
Do this in "templates/base/css/blogs_common.css". Change line 36 from "576 px" to "100%". Now the text wraps and expands properly when moved.
- Mishka <-- credit to this unity user