Repeat last command does not work

**Describe the bug**
Repeat last command does not work.

**To Reproduce**
Steps to reproduce the behavior:
1. send "f 1"
2. send "r"
3.

**Expected behavior**
f 1 keeps repeating.

**Screenshots**
n/a

**Arduino Information:**
 - OS: Mac
 - IDE Arduino IDE
 - IDE Version n/a
 - Board ESP32

**Additional context**
_debugLastCommand in the code is not used anywhere.