This happens with projects from older versions as well as 9.I was waiting for 9.0.20 update,but it didn’t fix it.I can’t believe they wouldn’t fix it,unless it’s not a bug and it’s just me.Project opens fine,and when I double click on a midi or audio region,the grid turns into a mess,0 bar appears,ruler tracks no longer showing correct position etc…This makes c9 completely unusable.Please take a look at the screenshot.
iMac 27 , OSX 10.11