sw/qa/extras/layout/data/tdf170630.docx |binary
 sw/qa/extras/layout/layout6.cxx         |   28 ++++++++++++++++++++++++++++
 sw/source/core/layout/tabfrm.cxx        |   17 ++++++++++++++---
 3 files changed, 42 insertions(+), 3 deletions(-)

New commits:
commit e75f74428a0c2eb5d4b318d6b4e520cc3c13c2d0
Author:     Mike Kaganski <[email protected]>
AuthorDate: Fri Feb 6 11:08:35 2026 +0500
Commit:     Mike Kaganski <[email protected]>
CommitDate: Fri Feb 6 15:33:41 2026 +0100

    tdf#170630: consider not-yet-moved flys in cell height as "too high"
    
    As the bugdoc demonstrated, it is not enough to split too high inner
    floating table: after the split, the follow anchor and follow fly
    may not cause the outer table to require an own split.
    
    This change introduces a shortcut in CalcHeightWithFlys_Impl (used
    to calculate cell heights considering anchored objects): if a lower
    is a follow anchor with a follow fly that hasn't yet moved, do not
    continue calculating accurate cell height, just return a huge height
    of this lower. This means that cells with such not-yet-moved anchors
    will never fit, and will always cause their table to be split. After
    that, the heights will be calculated accurately.
    
    Change-Id: Id81e69c08cfa58ffddfa771fa768f78735433d91
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/198811
    Tested-by: Jenkins
    Reviewed-by: Mike Kaganski <[email protected]>

diff --git a/sw/qa/extras/layout/data/tdf170630.docx 
b/sw/qa/extras/layout/data/tdf170630.docx
new file mode 100644
index 000000000000..99a8a8eb961d
Binary files /dev/null and b/sw/qa/extras/layout/data/tdf170630.docx differ
diff --git a/sw/qa/extras/layout/layout6.cxx b/sw/qa/extras/layout/layout6.cxx
index c4b430c9c04c..4f88d7392943 100644
--- a/sw/qa/extras/layout/layout6.cxx
+++ b/sw/qa/extras/layout/layout6.cxx
@@ -2085,6 +2085,34 @@ CPPUNIT_TEST_FIXTURE(SwLayoutWriter6, 
testTdf170620_float_table_after_keep_with_
     assertXPath(pXmlDoc, aP1OuterFlyTab + "/row/cell/txt[2]/anchored/fly", 2);
 }
 
+CPPUNIT_TEST_FIXTURE(SwLayoutWriter6, testTdf170630)
+{
+    // Given a document with a keep-with-next paragraph, followed by floating 
table containing
+    // two keep-with-next paragraphs and another floating table which is split 
across pages:
+    createSwDoc("tdf170630.docx");
+
+    // The keep-with-next paragraph and the floating table must start on page 
1:
+
+    xmlDocUniquePtr pXmlDoc = parseLayoutDump();
+    CPPUNIT_ASSERT(pXmlDoc);
+
+    // Exactly two pages (without the fix, there was only one):
+    assertXPath(pXmlDoc, "//page", 2);
+
+    // "Keep-with-next paragraph" is on the first page:
+    assertXPath(pXmlDoc, "//page[1]/body/txt[2]//SwLineLayout", "portion",
+                u"Keep-with-next paragraph");
+
+    // Exactly two objects anchored at each page (without the fix, the first 
page had three: one
+    // outer, and two inner, where the follow frame never moved forward):
+    assertXPath(pXmlDoc, "//page[1]/sorted_objs/fly", 2);
+    assertXPath(pXmlDoc, "//page[2]/sorted_objs/fly", 2);
+
+    // Page 1's paragraph 3 has two anchored flys (without the fix, it was 
one: the outer table
+    // never split):
+    assertXPath(pXmlDoc, "//page[1]/body/txt[3]/anchored/fly", 2);
+}
+
 } // end of anonymous namespace
 
 CPPUNIT_PLUGIN_IMPLEMENT();
diff --git a/sw/source/core/layout/tabfrm.cxx b/sw/source/core/layout/tabfrm.cxx
index 3867dabec329..23c8337b4e55 100644
--- a/sw/source/core/layout/tabfrm.cxx
+++ b/sw/source/core/layout/tabfrm.cxx
@@ -4841,10 +4841,21 @@ static tools::Long CalcHeightWithFlys_Impl(const 
SwFrame* pTmp, const SwFrame* p
         {
             // #i26945# - if <pTmp> is follow, the
             // anchor character frame has to be <pTmp>.
-            if ( bIsFollow &&
-                 pAnchoredObj->FindAnchorCharFrame() != pTmp )
+            if (bIsFollow)
             {
-                continue;
+                if (pAnchoredObj->FindAnchorCharFrame() != pTmp)
+                    continue;
+
+                if (SwFlyFrame* pFly = pAnchoredObj->DynCastFlyFrame())
+                {
+                    if (pFly->IsSplitButNotYetMovedFollow())
+                    {
+                        // A follow split fly, that is yet to move forward: 
upper's height is not
+                        // correct yet - just return a huge value to signal 
"too large". This will
+                        // eventually force split / move to the next page.
+                        return SAL_MAX_INT32 / 2; // ~19 km
+                    }
+                }
             }
             // #i26945# - consider also drawing objects
             {

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