Since 5.6.2, my task manager bar is always restored to screen 1 (which is left-of screen 0) instead of screen 0. I can drag it back to screen 0 (and the lastScreen config entry is updated correctly), but on restart it's back on screen 1. I guess this could be related to this commit:

commit 046260f397491c185e77b72110f7a2a0dfadb82b
Author: Marco Martin <notmart@gmail.com>
Date:   Thu Feb 4 15:50:28 2016 +0100

    insist to have lastScreen -1
    
    never risk to go in a panel by itself

diff --git a/systemtray.cpp b/systemtray.cpp
index 1e10f66..79f6c82 100644
--- a/systemtray.cpp
+++ b/systemtray.cpp
@@ -56,6 +56,7 @@ SystemTray::~SystemTray()
 
 void SystemTray::init()
 {
+    config().writeEntry("lastScreen", -1);
     Containment::init();
     actions()->removeAction(actions()->action("add widgets"));
     actions()->removeAction(actions()->action("add panel"));


Reproducible: Always

Steps to Reproduce:
1. Drag task manager to screen 1
2. Restart the computer
3.

Actual Results:  
Task manager is restored on screen 0.

Expected Results:  
Task manager should be restored on screen 1.