Set new file default content to a single byte full of zeros so that the cursor doesn't leave replace mode.

file.py

@@ -1,7 +1,7 @@
 #!/usr/bin/python3
 import os.path
 
-from PyQt6.QtWidgets import QFileDialog, QTabWidget
+from PyQt6.QtWidgets import QFileDialog
 from editor import BitEditor
 
 MAX_FILE_SIZE = 262144  # 2^18
@@ -22,7 +22,10 @@ class FileActions:
         if dialog.exec():
             self.open_multiple_files(dialog.selectedFiles())
 
-    def create_file(self, content: bin=b""):
+    def create_file(self, content: bytes=(0).to_bytes(1)):
+        # open a dialog where the user can choose a new filepath and create an empty file at that path
+        # bytes=(0).to_bytes(1) creates a byte with only zeros in it
+
         file_path, extension = QFileDialog.getSaveFileName(
             caption="New File",
             directory=self.app.utils.home_path,