Unable to set Enclosure heater temp after a print completes

If i set the temp it will be zero'd back out after a few seconds ( some times less ) the previous print had set enclosure temp to be off but the print is now finished and i need to heat the enclosure for the next print.

I'm not getting any errors, its as if it still thinks its printing, if i reset firmware i can set the enclosure temp to whatever i want like expected

START_PRINT (with expected params ) and END_PRINT exist in the Gcode
Solution
just wanted to thank you both again, with your help i was able to print PPA-CF zero issues, entire enclosure properly heated with no manual intervention. It. Was. Glorious.
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