Rebooted PC and assembly components were then fine!! What a farce.
Two of us updated to MP6 and found the include issues, but let's be honest the include command in SE has been an absolute bag of s**t from day 1 - it struggles to update properly (especially when including edges from assemblies), drops links to the included part for fun (especially when renamed or moved using Relationship Manager) and when including the silhouette edge of a round object in an assembly it flips to the opposite side for no reason whatsoever. These would be my biggest frustrations off the top of my head. We machine a lot of sub-assemblies and so are probably coming across the include issues in assembly environment more than most.
As you say it has got even worse with the latest MP (way to go with the beta testing chaps...) - to the point where basically as soon as a sketch is closed it becomes unconstrained as included lines turn brown as they have lost the links to the referenced parts. The more frustrating thing is this doesn't happen every time - there is just no consistency to it's cock-ups!
I also can't believe that Siemens have still not managed to get out a fix for these issues - it's been over a month now FFS!
If anyone from Siemens comes on here may I suggest thumbs out of asses, work 24/7 and get on with it guys PLEASE - it's costing your clients time, money, a lot of frustration and any goodwill that you may have had!
