#6471 - Removing peptide from sense/antisence chain cause unnessussary phosphate removal

rrodionov91 · rrodionov91 · commit b5480769c274 · 2025-02-11T19:32:56.000+01:00
diff --git a/packages/ketcher-core/src/application/editor/modes/SequenceMode.ts b/packages/ketcher-core/src/application/editor/modes/SequenceMode.ts
@@ -866,8 +866,8 @@ export class SequenceMode extends BaseMode {
       if (
         nodeBeforeSelection === nodeInSameChainBeforeSelection &&
         nodeBeforeSelection instanceof Nucleotide &&
-        !(nodeInSameChainAfterSelection instanceof Nucleotide) &&
-        !(nodeInSameChainAfterSelection instanceof Nucleoside)
+        selectionStartNode instanceof Nucleoside &&
+        (!nodeAfterSelection || nodeAfterSelection instanceof EmptySequenceNode)
       ) {
         // delete phosphate from last nucleotide
         modelChanges.merge(
