Cura 3.3.1 - Nozzle size can't be saved?

[ArthurLei 0]

In Manage Printer > Machine Setting, there is a field for me to change the nozzle size, default is 0.5mm. Everything seems fine after I change it to 0.4mm, my printer nozzle size. However, when I quit Cura and restart again, the default value 0.5mm will come back again and the value 0.4 will be lost. Is it a bug in Cura 3.3.1?

 

I have tried "Run as Administrator" in Windows 10 with no luck.

 

Printer: Anycubic Kossel model, using DeltaBolt printer profile with modified values.  

[starbuck 25]

I had a weird issue similar to this. Try hitting "Enter" after changing the nozzle size, wait a moment and watch the number, then close out the dialog window.

[ahoeben 1,968]

Try setting it to 0.4001 or something like that. I think the issue is with setting it to exactly 0.4