New Timeline doesn't show frames

Unity 2017.1, win 10 x64:

  1. I create timeline, assign it to empty: it creates a timeline but does not show me any frame numbers, I can see only empty bar
  2. I change duration to “fixed time”,type “240” for excample, still I can’t see any frames, even after playing timeline or the project.
  3. I try to zoom in or out, nothing changes
  4. In some projects it just works fine - I can animate things, but in some I can’t fix it :confused:


EDIT: restarting Unity shows frames. So I guess it is a bug :confused:

close timeline tab and reshow it again from windows->timeline will show frames again (but show timeline window while selecting gameobject having playable director component attached).