src/components/EventOverlay.vue

@@ -307,19 +307,16 @@ function startLocalDrag(init, evt) {
 
 // Determine date under pointer: traverse DOM to find day cell carrying data-date attribute
 function getDateUnderPointer(x, y, el) {
-  let cur = el
-  while (cur) {
-    if (cur.dataset && cur.dataset.date) {
-      return { date: cur.dataset.date }
+  for (let cur = el; cur; cur = cur.parentElement)
+    if (cur.dataset?.date) return { date: cur.dataset.date }
+  // The event overlay may block seeing the day under it, so we need a fallback
+  const overlayEl = weekOverlayRef.value
+  const container = overlayEl?.parentElement // .days-grid
+  if (container) {
+    for (const d of container.querySelectorAll('[data-date]')) {
+      const { left, right, top, bottom } = d.getBoundingClientRect()
+      if (y >= top && y <= bottom && x >= left && x <= right) return { date: d.dataset.date }
     }
-    cur = cur.parentElement
-  }
-  // Fallback: elementFromPoint scan
-  const probe = document.elementFromPoint(x, y)
-  let p = probe
-  while (p) {
-    if (p.dataset && p.dataset.date) return { date: p.dataset.date }
-    p = p.parentElement
   }
   return null
 }