Encore CS6: I imported a timeline and pasted in a timecode, the first few time it moved to the specified location. Then I typed in another timecode - moved to that location too. Then after a few times it jumped to a random location. Encore does not go to this state at once, but once it is in this state it jumps to random timecodes. Other people were able to replicate this bug.
Thanks for the reply. They are very far apart. But even if not, Encore doesn't have a problem with IFrames, so if you input a timecode that is not on an IFrame, Encore will just place the chapter point at the nearest IFrame for you. I was told that if you manually type in the timecode (not copy paste) this bug won't happen. I haven't tried that but that is not an option for me. (Too much work). I have also had a suggestion to install the 6.0.2 update. I haven't tried that yet.