Since a week or so all our tables (old and new) have an annoying formatting error: cell spacing (left) is missing in the first column.
If the first column has a merged cell (across multiple rows), the problem "shifts" to the second column for all merged rows except the first.
The problem only occurs on published pages. Everything looks good in edit and preview mode.
Tested in several browsers. Not related to caching. Any ideas what might be going on / how to resolve this?