Quote -
Seems that your code allways computes normales, because the GUI-value is a string ("true" or "false").  If you change line 23 to:
if options.get('compute_normals', "true").strip()=="true":
the result should be exact.

First of all: I'd already fixed that in my code several days ago and said so in the main thread. You ignored it, as you usually do, and used some older version.

Second of all: it's up to you anyway to call worker code with correctly typed values.

Here's the deal: I do no longer care what you or BB do in your frameworks. I will write my code the way I think it should work, and you can take it or leave it. I will add my own little GUI at some point, so I won't have to pull my hair anymore at your assorted mess. Sorry if that's a bit harsh, but I don't have the time, energy or ambition to babysit either of you.

-- I'm not mad at you, just Westphalian.