[Bug] trim unexpected result

dear Mc Neel
I am getting some really unexpected results trying to split an surface after using _filletSrf (violet) with option Extend.

see this short video to understand the bug - nothing special for the public…

and the according rhino-File:
trimBug.3dm (102.4 KB)

thanks for a fix, best, tom

Hi Tom - I see that, thanks - it seems OK using the fillet surface as the trimmer, in this case.
Works as expected in V7.