MIF and SVG output support have not been restored, yet. Auto table layout is not implemented, yet. Footnotes may overlap with text of the region-body in multi-column documents. Space resolution does not work between footnote regions. There's a problem involving nested block-containers and reference-orientation 180/-180 (Bugzilla #36391) block-containers with no height currently don't create a fence for spaces as they should (they behave like a normal block). Preserved linefeeds in fo:character are not handled correctly. An empty block currently produces a fence for stacking constraints which it shouldn't. There are several small problems around white space handling. leaders with leader-pattern="use-content" may not work as expected. If two consecutive pages don't have the same available width, the content currently isn't properly fit into the available space on the new page. background-images on page-number-citations are not placed correctly. Not all FO elements can be referenced by their "id", most notably: table-body, table-header, table-footer and table-row. Column balancing in multi-column documents may not work as expected (Bugzilla #36356)