I am not sure if my mkv the problem,cause this bug with jumping in Chapters
occurs only in Files with an DTS-HD audiostream. So i think it a bug in FIrmware
But what you mean with MKVToolnix and fixing the Problem,When i merged my Files ad the end of process,MKVMerge says 0 Problems,everything went well.
PS: How can i post a mediainfo file