Print automatically restarts (printing from Cura plugin)

Hello,

I am using OctoPi 0.15.1 with OctoPrint 1.3.9 in combination with Cura 3.6.0.
I have configured the OctoPrint connection in Cura and I am always printing directly from Cura via this connection!

Here is the problem:
Sometimes, after a print finishes, it automatically restarts.
The GCode Viewer displays the model only one time, but after printing it, the progress bar is only at 50% and it continues printing / reprints the same model again without any user interaction.

To be honest I have no idea, what the problem is and how it is caused.
I have unchecked the "Automatically start print job after uploading" in Cura. Maybe this will help..?
I have also checked the octoprint.log file, but there was no suspicious to me.
Unfortunately, serial.log was disabled

Does anyone have an idea, why this is happening?

Thanks,
Philipp

octoprint.log:
2018-12-09 17:16:31,937 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Detecting serial port"
2018-12-09 17:16:31,978 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting serial port" to "Opening serial port"
2018-12-09 17:16:31,980 - octoprint.util.comm - INFO - Changing monitoring state from "Opening serial port" to "Detecting baudrate"
2018-12-09 17:16:32,739 - tornado.access - WARNING - 409 GET /api/printer (::ffff:192.168.10.118) 18.10ms
2018-12-09 17:16:32,987 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-12-09 17:16:32,997 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting baudrate" to "Operational"
2018-12-09 17:16:33,013 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0
2018-12-09 17:16:34,380 - octoprint.util.comm - INFO - Printer reports firmware name "Marlin V1; Sprinter/grbl mashup for gen6"
2018-12-09 17:16:36,368 - octoprint.filemanager.analysis - INFO - Starting analysis of local:RR_Santa_V5_1randomA.gcode
2018-12-09 17:16:36,374 - octoprint.filemanager.analysis - INFO - Invoking analysis command: /home/pi/oprint/bin/python2 -m octoprint analysis gcode --speed-x=6000 --speed-y=6000 --max-t=10 --throttle=0.0 --throttle-lines=100 /home/pi/.octoprint/uploads/RR_Santa_V5_1randomA.gcode
2018-12-09 17:16:36,521 - octoprint.util.comm - INFO - Changing monitoring state from "Operational" to "Printing"
2018-12-09 17:16:36,547 - octoprint.util.comm - INFO - M110 detected, setting current line number to 0

There is an updated version of the OctoPrint Connection plugin for Cura in the Marketplace that fixes this issue.