diff --git a/src/document/katedocument.cpp b/src/document/katedocument.cpp
--- a/src/document/katedocument.cpp
+++ b/src/document/katedocument.cpp
@@ -4956,6 +4956,12 @@
     for (int line = 0; line < lines(); ++line) {
         Kate::TextLine textline = plainKateTextLine(line);
 
+        // if the cursor is on the end of this line, don't trim trailing spaces
+        if (m_activeView->cursorPosition().line() == line &&
+            m_activeView->cursorPosition().column() == textline.data()->length()) {
+            continue;
+        }
+
         // remove trailing spaces in entire document, remove = 2
         // remove trailing spaces of touched lines, remove = 1
         // remove trailing spaces of lines saved on disk, remove = 1