imp(dom-adapters): description

Author: e11sy

packages/dom-adapters/src/BlockToolAdapter/index.ts

@@ -354,10 +354,10 @@ export class BlockToolAdapter implements BlockToolAdapterInterface {
     const relatedFragments = this.#model.getFragments(this.#blockIndex, key, end, currentValue.length);
 
     /**
-     * Adjust fragments ranges respectfully to the removed text
+     * Fragment ranges bounds should be decreased by end index, because end is the index of the first character of the new block
      */
     relatedFragments.forEach(fragment => {
-      fragment.range[0] -= Math.max(0, end);
+      fragment.range[0] = Math.max(0, fragment.range[0] - start);
       fragment.range[1] -= end;
     });