Early release 2017.4.0 Build 34 Editing controllers in PRV crashes Sonar

Hi guys

Found a little issue with Early release 2017.4.0 Build 34 that does not occur in Build 31

Steps:

1) Create a Simple Instrument or MIDI only track, create a controller event in that track by any means. 
                 (I created a CC1 event using the draw tool in PRV controller lane in a SI track with Rapture Pro)
2) Move to a temporal point along the timeline but making sure the original CC event in step 1 is still visible.
3) Switch to Smart Tool and adjust value of most recent Controller value (again using PRV controller lane)

Mouse pointer disappears and Sonar becomes unresponsive (on one occasion Sonar actually crashed with a C0000005 error - report not submitted)

I was able to reproduce this issue on separate occasions, once in a Simple Instrument and once a MIDI only track.  The issue manifests whether I edit manually or edit using the transform tool

I manually reverted to Early release 2017.4.0 Build 31 and this issue does not occur.  I did this install and revert, do the above several times. Every time I installed Early release 2017.4.0 Build 34 and did the above steps, Sonar became unresponsive.

I am now using Early release 2017.4.0 Build 31

Note: Anyone who wishes to try this, please do not perform on a mission critical project in case it crashes Sonar.

Thanks again promidi.  As Bob indicated a fix has been checked in.
 
Thanks,
Jim