ID 437414 - A crash occurs when pressing V on a missing project item in the sequence timeline

Problem summary
A crash occurs when pressing V on a missing project item in the sequence timeline.

Customer reported version
hiero.12.1v1

Customer reported platform
windows7

Steps to reproduce

1) In Nuke Studio/Hiero, import any footage.

2) Drag+drop the clip item onto the Timeline to create a Sequence.

3) Delete the item from the project bin.

4) Select the clip item on the track and press V on the keyboard.

Expected behavior
Nuke Studio/Hiero should remain stable.

Actual behavior
Nuke Studio/Hiero crashes after pressing V on a track item missing from the projects bin.

Workaround
There is no available workaround at this time.

Reproduced by Support in
Nuke Studio/Hiero 12.1v2 - Windows 10

Nuke Studio/Hiero 12.1v1 - Windows 10

Unable to reproduce bug in:
Nuke Studio/Hiero 12.0v6 - Windows 10

Earliest version tested
Nuke Studio/Hiero 12.0v6 - This issue doesn't appear in this version and has regressed