diff --git a/layout/generic/nsBlockFrame.cpp b/layout/generic/nsBlockFrame.cpp
index 2203f0744a8f..14186883779e 100644
--- a/layout/generic/nsBlockFrame.cpp
+++ b/layout/generic/nsBlockFrame.cpp
@@ -2670,10 +2670,10 @@ void nsBlockFrame::ReflowDirtyLines(BlockReflowState& aState) {
if (!line->IsDirty()) {
const bool isPaginated =
// Last column can be reflowed unconstrained during column balancing.
- // Hence the additional GetPrevInFlow() and GetNextInFlow() as a
- // fail-safe fallback.
+ // Hence the additional NS_FRAME_HAS_MULTI_COLUMN_ANCESTOR bit check
+ // as a fail-safe fallback.
aState.mReflowInput.AvailableBSize() != NS_UNCONSTRAINEDSIZE ||
- GetPrevInFlow() || GetNextInFlow() ||
+ HasAnyStateBits(NS_FRAME_HAS_MULTI_COLUMN_ANCESTOR) ||
// Table can also be reflowed unconstrained during printing.
aState.mPresContext->IsPaginated();
if (isPaginated) {
diff --git a/testing/web-platform/tests/css/css-break/float-009-ref.html b/testing/web-platform/tests/css/css-break/float-009-ref.html
new file mode 100644
index 000000000000..9e117c49c2ba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-break/float-009-ref.html
@@ -0,0 +1,20 @@
+
+
+
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+
diff --git a/testing/web-platform/tests/css/css-break/float-009.html b/testing/web-platform/tests/css/css-break/float-009.html
new file mode 100644
index 000000000000..8f76c75bd887
--- /dev/null
+++ b/testing/web-platform/tests/css/css-break/float-009.html
@@ -0,0 +1,23 @@
+
+
+
+
+
+
+
+
+
+
+
+