diff --git a/src/gui/text/qtextengine.cpp b/src/gui/text/qtextengine.cpp
index 35d60485940..af974753159 100644
--- a/src/gui/text/qtextengine.cpp
+++ b/src/gui/text/qtextengine.cpp
@@ -2604,6 +2604,7 @@ QTextEngine::LayoutData::LayoutData()
     haveCharAttributes = false;
     logClustersPtr = nullptr;
     available_glyphs = 0;
+    currentMaxWidth = 0;
 }
 
 QTextEngine::LayoutData::LayoutData(const QString &str, void **stack_memory, int _allocated)
@@ -2636,6 +2637,7 @@ QTextEngine::LayoutData::LayoutData(const QString &str, void **stack_memory, int
     hasBidi = false;
     layoutState = LayoutEmpty;
     haveCharAttributes = false;
+    currentMaxWidth = 0;
 }
 
 QTextEngine::LayoutData::~LayoutData()
@@ -2721,6 +2723,7 @@ void QTextEngine::freeMemory()
         layoutData->hasBidi = false;
         layoutData->layoutState = LayoutEmpty;
         layoutData->haveCharAttributes = false;
+        layoutData->currentMaxWidth = 0;
         layoutData->items.clear();
     }
     if (specialData)
diff --git a/src/gui/text/qtextengine_p.h b/src/gui/text/qtextengine_p.h
index 925dafe04e2..59e332c64ae 100644
--- a/src/gui/text/qtextengine_p.h
+++ b/src/gui/text/qtextengine_p.h
@@ -385,6 +385,7 @@ public:
         uint layoutState : 2;
         uint memory_on_stack : 1;
         uint haveCharAttributes : 1;
+        QFixed currentMaxWidth;
         QString string;
         bool reallocate(int totalGlyphs);
     };
diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp
index e4281b78e60..d168a77d57f 100644
--- a/src/gui/text/qtextlayout.cpp
+++ b/src/gui/text/qtextlayout.cpp
@@ -1865,6 +1865,7 @@ void QTextLine::layout_helper(int maxGlyphs)
     lbh.logClusters = eng->layoutData->logClustersPtr;
     lbh.previousGlyph = 0;
 
+    bool manuallyWrapped = false;
     bool hasInlineObject = false;
     QFixed maxInlineObjectHeight = 0;
 
@@ -1940,6 +1941,7 @@ void QTextLine::layout_helper(int maxGlyphs)
                 lbh.calculateRightBearingForPreviousGlyph();
             }
             line += lbh.tmpData;
+            manuallyWrapped = true;
             goto found;
         } else if (current.analysis.flags == QScriptAnalysis::Object) {
             lbh.whiteSpaceOrObject = true;
@@ -1974,11 +1976,10 @@ void QTextLine::layout_helper(int maxGlyphs)
                 addNextCluster(lbh.currentPosition, end, lbh.spaceData, lbh.glyphCount,
                                current, lbh.logClusters, lbh.glyphs);
             }
-
-            if (!lbh.manualWrap && lbh.spaceData.textWidth > line.width) {
-                goto found;
-            }
         } else {
+            if (!lbh.manualWrap && lbh.spaceData.textWidth > line.width)
+                goto found;
+
             lbh.whiteSpaceOrObject = false;
             bool sb_or_ws = false;
             lbh.saveCurrentGlyph();
@@ -2161,7 +2162,12 @@ found:
         eng->maxWidth = qMax(eng->maxWidth, line.textWidth);
     } else {
         eng->minWidth = qMax(eng->minWidth, lbh.minw);
-        eng->maxWidth += line.textWidth + lbh.spaceData.textWidth;
+        eng->layoutData->currentMaxWidth += line.textWidth;
+        if (!manuallyWrapped)
+            eng->layoutData->currentMaxWidth += lbh.spaceData.textWidth;
+        eng->maxWidth = qMax(eng->maxWidth, eng->layoutData->currentMaxWidth);
+        if (manuallyWrapped)
+            eng->layoutData->currentMaxWidth = 0;
     }
 
     line.textWidth += trailingSpace;
diff --git a/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp b/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp
index 67d4b9884bb..3958e2a01c9 100644
--- a/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp
+++ b/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp
@@ -2655,17 +2655,28 @@ void tst_QTextLayout::min_maximumWidth_data()
     QTest::newRow("long string") << QStringLiteral("lmong_long_crazy_87235982735_23857239682376923876923876-fuwhfhfw-names-AAAA-deeaois2019-03-03.and.more");
     QTest::newRow("QTBUG-106947") << QStringLiteral("text                                text");
     QTest::newRow("spaces") << QStringLiteral("                text                text                ");
+    QTest::newRow("QTBUG-104986") << QStringLiteral("text\ntext\ntext");
+    QTest::newRow("spaces + line breaks") << QStringLiteral("       \n         text\n                \ntext       \n         ");
 }
 
 void tst_QTextLayout::min_maximumWidth()
 {
     QFETCH(QString, text);
+    text.replace('\n', QChar::LineSeparator);
 
     QTextLayout layout(text, testFont);
     layout.setCacheEnabled(true);
 
+    QTextOption opt;
+    opt.setWrapMode(QTextOption::NoWrap);
+    layout.setTextOption(opt);
+    layout.beginLayout();
+    while (layout.createLine().isValid()) { }
+    layout.endLayout();
+
+    const qreal nonWrappedMaxWidth = layout.maximumWidth();
+
     for (int wrapMode = QTextOption::NoWrap; wrapMode <= QTextOption::WrapAtWordBoundaryOrAnywhere; ++wrapMode) {
-        QTextOption opt;
         opt.setWrapMode((QTextOption::WrapMode)wrapMode);
         layout.setTextOption(opt);
         layout.beginLayout();
@@ -2674,6 +2685,9 @@ void tst_QTextLayout::min_maximumWidth()
         const qreal minWidth = layout.minimumWidth();
         const qreal maxWidth = layout.maximumWidth();
 
+        QCOMPARE_LE(minWidth, maxWidth);
+        QCOMPARE_LE(maxWidth, nonWrappedMaxWidth); // maxWidth for wrapped text shouldn't exceed maxWidth for the text without wrapping.
+
         // Try the layout from slightly wider than the widest (maxWidth)
         // and narrow it down to slighly narrower than minWidth
         // layout.maximumWidth() should return the same regardless