From 4f128430b7fe1bc9bc2d1f5e779dac5e22d50b57 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20=C5=A0ach?= <martin.sachin@gmail.com>
Date: Mon, 25 Mar 2024 12:13:18 +0100
Subject: [PATCH] Add G92 E0 after first deretraction as it may be removed.

---
 src/libslic3r/GCode.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index a4038f6506..25ba0b4ab1 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -3304,6 +3304,9 @@ std::string GCodeGenerator::_extrude(
     } else {
         this->m_already_unretracted = true;
         gcode += "FIRST_UNRETRACT" + this->unretract();
+
+        //First unretract may or may not be removed thus we must start from E0.
+        gcode += this->writer().reset_e();
     }
 
     if (m_writer.multiple_extruders && !has_active_instance) {