ID 468956 - A crash occurs while the Preview browser is enabled when importing .aaf files in Nuke Studio

Problem summary
A crash occurs while an existing file such as a .mov or .avi has already been imported, and then importing a .aaf file while the Preview browser is enabled in Nuke Studio.

Customer reported version
nuke.12.2v3

Customer reported platform
centos6

Steps to reproduce

1) Launch Nuke Studio/Hiero and import a .mov or .avi file.

2) Right-click the project bin and select File > Import EDL/XML/AAF.

3) On the file dialog popup, click the black triangle in the top right corner to enable the Preview mode.

4) Select any .aaf file to read in, then press OK.

Expected behavior
Nuke Studio should import the AAF file(s) without issue.

Actual behavior
Nuke Studio crashes when importing the AAF file.

Workaround
Opening the uistate.ini and removing the line for preview=true or setting to 'false' fixes the issue.

Reproduced by Support in:

Nuke Studio/Hiero 12.2v5 - Windows 10, macOS 10.14

Nuke Studio/Hiero 12.2v1 - Windows 10, macOS 10.14

Unable to reproduce bug in:
Nuke Studio/Hiero 12.1v5 - Windows 10, MacOS 10.14

Earliest version tested
Nuke Studio/Hiero 12.1v5 - This issue doesn't appear in this version and has regressed