Hi Pilou, you probably have a white screen because the keyboard shortcut that you use to launch the node editor is still telling it to load from the install's ui folder.
@ Bem - I use a very old prog more than 25 years old but yet very smart! :) Photo Impact 6.0! An "All in the Box" ;)
It always run even some very very few functions are not yet accessible!
(it was also capable to make web sites! a true gem! :)
Now i have a little trouble because my cool GifCam can't all reccord animations above Elephant :(
I will must maybe use another thing...
Just a speedy test as my little GifCam has some troubles for reccord above the NodeEditor!
This another cool one alows 15 minutes free by video! And you can dowload a "local" version of the program!
So no need to reccord on the Net! And seems to work fine with any functions of the NodeEditor! https://screencast-o-matic.com/screen-recorder-features
here..an MP4 format that you upload anywhere you want!
You can disable the audio! (recommanded here!) Make a full screen... (not yet here but yes on my site) Thx to Michael for the embed code! ;)
PS you can make a more bigger screen here on the forum pressing the little arrow middle top screen! ;)
Move the mouse from over-top to middle screen for show this arrow...
So Super cool!
The colored cursors who don't exist on the NodeEdotor can be disabled or not at the reccording!