Unable to reduce timeline, stuck at 118sec

Using Storyline 2.  Editing slides with multiple zooms, shapes and audio. No layers. I cut the audio by several seconds, and adjusted all elements to the shorter audio length.  Only the timeline I cannot drag to reduce. It stays stuck at 118s where the "end" is. I cannot drag it to the left any further although all elements end at 108s.  No other elements are hidden or going until the end of the timeline. Copying the slide elsewhere did not help. Closing/opening the file did not help.

Is this a bug? I had this happen in 2 different courses after I reduced the audio track. 

What is the trick to use to make the timeline shorter when the timeline is longer than the slide elements and the timeline cannot be dragged left since it is stuck?

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