ID 229671 - CameraTracker's "Import Tracks" option hangs Nuke [Linux]

Problem summary
CameraTracker's "Import Tracks" option freezes Nuke.

Customer reported version
NukeX 10.0v3x

Customer reported platform

CentOS 6.6

Steps to reproduce

1.

Open attached script camera_tracking_bug.nk in Nuke

2.

Open the control panel of node CameraTracker1 to the UserTracks tab

3.

In the Viewer, select a point (points) on one of the tracks and then right-click and choose tracks > extract user track

4.

On the panel's UserTracks tab, click Export Tracks

5.

On the file browser that appears, save the track(s) to a <path>/<filename>.txt

6.

Open the control panel of node CameraTracker2 to the UserTracks tab

7.

click Import Tracks and in the file browser that appears, choose the track file saved n step 5 above

Reproduced by support

CentOS6.8  Nuke10.0v1, Nuke10.0v3

HOWEVER, it does NOT fail : 

OS 10.10.5  Nuke10.0v3

or

CentOS6.8 Nuke9.0v9

Expected behaviour
Track(s) imported to control panel's list

Actual behaviour
Hangs Nuke.

Requires this to kill the process:

ps ax | grep Nuke

sudo kill -s HUP <process_id>