Cura 5.0 will not slice for full 330mm on the X

[jsw 19]

I know this will only affect 0.001% of the users out there, but I sanity checked and the issue does not exist in 4.12.1, which I have been using.

 

I have a model which is EXACTLY 330mm wide.  (I will post the .stl if necessary)

 

When I first did test prints I set things up according to a previous post detailing what needs to be done to get full build volume, things like no auto-generated supports, zero travel-avoid distance, no skirt/brim and I always got successful slicing for a full-width print on 4.12.  Now I'm ready to do the 'production' print.

 

I was intrigued by the promise of a faster build time (this is a 2+ day print) so I said 'what the {heck}' and downloaded 5.0.0 and gave it a try.  (Ubuntu 20.04.3 LTS on a fairly beefy desktop)

 

When I loaded and centered the model, it remained grayed-out (zebra-striped) and I could not find any obvious setting that was interfering with it.

 

I played around a bit with scaling of the model, and I found out that 329.4mm is the magic number at which it would slice.

 

Am I missing something here?  Is there some other setting that needs to be tweaked?  Is this a bona fide bug or issue with 5.0?

 

I went back over to the 4.12 version and it sliced just fine, and I figured I would use that for the actual print, which is running now, rather than give up a fractional percentage point of the width.

 

Speaking of settings, I quickly noticed that the supports on build plate only or everywhere option is missing (by default).  I assume that this is buried in the preferences menu, but this is a very important option, particularly when you are using externally-loaded support shapes.  IMAO, it should always appear by default.

 

Thanks.