When a large paragraph is split across blocks, don't treat the continuation as a new paragraph

lib/Epub/Epub/parsers/ChapterHtmlSlimParser.cpp

@@ -1592,13 +1592,17 @@ void ChapterHtmlSlimParser::makePages() {
 
   const int lineHeight = renderer.getLineHeight(fontId) * lineCompression;
 
-  // Apply top spacing before the paragraph (stored in pixels)
+  // Apply top spacing before the paragraph — skip for continuation fragments
+  // (words left over after an intermediate flush): the top margin was already
+  // applied before the first set of lines from this logical paragraph.
   const BlockStyle& blockStyle = currentTextBlock->getBlockStyle();
-  if (blockStyle.marginTop > 0) {
-    currentPageNextY += blockStyle.marginTop;
-  }
-  if (blockStyle.paddingTop > 0) {
-    currentPageNextY += blockStyle.paddingTop;
+  if (!currentTextBlock->isContinuation()) {
+    if (blockStyle.marginTop > 0) {
+      currentPageNextY += blockStyle.marginTop;
+    }
+    if (blockStyle.paddingTop > 0) {
+      currentPageNextY += blockStyle.paddingTop;
+    }
   }
 
   // Calculate effective width accounting for horizontal margins/padding