Fix linkedEditing desync (#242993)

Author: alexvoedi

src/vs/editor/contrib/linkedEditing/browser/linkedEditing.ts

@@ -300,8 +300,15 @@ export class LinkedEditingContribution extends Disposable implements IEditorCont
 			}
 		}
 
-		// Clear existing decorations while we compute new ones
-		this.clearRanges();
+		if (!this._currentRequestPosition?.equals(position)) {
+			// Get the current range of the first decoration (reference range)
+			const currentRange = this._currentDecorations.getRange(0);
+			// If there is no current range or the current range does not contain the new position, clear the ranges
+			if (!currentRange?.containsPosition(position)) {
+				// Clear existing decorations while we compute new ones
+				this.clearRanges();
+			}
+		}
 
 		this._currentRequestPosition = position;
 		this._currentRequestModelVersion = modelVersionId;