I’m using the Pilcrow theme with one right-hand sidebar (widgets are dragged to the main Sidebar space). It has worked fine for nearly two years, but now an extra blank line is being added to any widget that I place near the top of the sidebar.
If I place a text widget there, the anomaly shows up as a line break (hard return) in the middle of the text. If I place a picture widget, a blank image box appears below my title but floating above the main image box. If I place the Recent Posts widget there, I get an extra list box with a single blank bullet below my title and above my main list box.
The “blank line” is in a fixed position near the top of the sidebar, and its position isn’t affected by adding or removing widgets above it.