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FW 3.13.0-3.13.1 filament detection not working at print start #4380

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@jwingenroth

Description

Printer type MK3S+
Printer firmware version - 3.13.1

Describe the bug
I normally send a print request from PrusaSlicer without filament loaded. After mesh bed leveling, the print head goes to the front left to print the lead in line and detects there is no filament. Then starts the load filament routine.

After updating to FW 3.13.1 the printer starts printing with no filament loaded.

I confirmed the filament sensor is not indicating 1. All filament sensor settings are ON.

Down graded the FW and printed same file again and lack of filament is recognized.

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