This test uses x and y glyph positioning.
svg/text/text-text-06-t.svg is almost the exact same test and fails in the same way.
BreakingContext::handleText(): if (isSVGText && m_current.offset()) { // Force creation of new InlineBoxes for each absolute positioned character (those that start new text chunks). if (downcast<RenderSVGInlineText>(renderText).characterStartsNewTextChunk(m_current.offset())) ensureCharacterGetsLineBox(m_lineMidpointState, m_current); } If the y="" attribute is a list, then each character gets its own line box, which means that ligatures don't work across them.
Not a regression.