ID 394507 - The Node Graph slows/becomes unresponsive down when a Text Soft Effect properties panel open

Problem summary
The Node Graph slows/becomes unresponsive down when a Text Soft Effect properties panel open  

The more text you have, the worse the performance gets, and this gradually gets worse from Nuke 11.0v1 to Nuke 11.3v4.

This only happens on Windows and Mac

Steps to reproduce

1) Open Nuke Studio

2) Import some footage and add it to the Timeline

3) Right click the clip>Effects>Text

4) Type a few lines of text

5) Switch to the Node Graph, and drage the imported footage from the project bin into the Node Graph, the Read node does not appear.

6) Create some other nodes like Grades, they also do not appear

7) Change to the Dope Sheet and back, the nodes will now appear, but no new updates will occur in the Node Graph

Expected behaviour
For the Node Graph to be interactive

Actual behaviour
When a Text Soft Effect is open, the interactively slows down/stops completely

Workaround
If you leave the Node Graph open for some time, doing nothing, then eventually it will start working again. The more text you have in the Text Soft Effect, the longer this seems to take.

Reproduced by support

This problem has been reproduced on:

Nuke 11.3v4 - Windows 10 - MacOSX 10.13

Nuke 11.3v1 - Windows 10

Nuke 11.2v1 - Windows 10

Nuke 11.1v1 - Windows 10

Nuke 11.0v1 - Windows 10 - MacOSX 10.13 - regression

Unable to reproduce bug in:

Nuke 11.3v4 - CentOS 6.9
Nuke 10.5v8 - Windows 10 - MacOSX 10.13

Earliest version tested
Nuke 10.5v8 - This issue no longer appears in this version and has regressed