Forums Bug Reports Custom dialog tab mnemonic issue

alias name { dialog -m name name }
dialog name {
  title "Name"
  size -1 -1 335 233
  tab "Part I", 1, 5 8 326 193
  text "Sample text", 4, 21 40 207 14, tab 1
  text "Sample text", 5, 21 58 42 14, tab 1
  tab "Part II", 2
  text "Sample text", 6, 21 40 207 14, tab 2
  text "Sample text", 7, 21 58 42 14, tab 2
  tab "Part III", 3
  text "Sample text", 9, 21 40 207 14, tab 3
  text "Sample text", 10, 21 58 42 14, tab 3
  check "Sho&w prefix (~&&@%+)", 11, 21 76 131 16, tab 3
  button "&OK", 12, 253 203 76 23, ok
}