diff --git a/docs/PLAN.md b/docs/PLAN.md
index 98b986b..903414b 100644
--- a/docs/PLAN.md
+++ b/docs/PLAN.md
@@ -137,6 +137,8 @@ Therefore the palette is replaced, not extended, and the replacement is built on
   does the usual primary-selection paste.
 - Right-button chords are intentionally **not** ported — the right button is the
   radial gesture. (Revisit later.)
+- The radial gesture is suppressed while the left button is held, so an RMB tap
+  mid-selection (or during a left+middle chord) does not pop the radial.
 
 ### M5 — Command vocabulary + project model + switchers — NEXT
 - `:`-verb pack via `KTextEditor::Command`: `sort`, `align`, `json`, `b64`,
diff --git a/src/plugin/ollieplugin.cpp b/src/plugin/ollieplugin.cpp
index b2493d8..c39b2ba 100644
--- a/src/plugin/ollieplugin.cpp
+++ b/src/plugin/ollieplugin.cpp
@@ -399,6 +399,13 @@ bool OllieView::eventFilter(QObject *obj, QEvent *event)
         return QObject::eventFilter(obj, event);
     }
 
+    // Suppress the radial when the left button is already held: the user is
+    // mid-selection (or setting up a left+middle chord), not starting a clean
+    // radial gesture. buttons() reports the other buttons down at press time.
+    if (m_leftDownInView || (me->buttons() & Qt::LeftButton)) {
+        return QObject::eventFilter(obj, event);
+    }
+
     // Pop the radial at the press position and begin the drag gesture. The
     // press is consumed so the context menu does not appear and the caret is
     // not moved (an intentional, configured trade-off).