Difficulty entering custom class names when annotating

[SimonKravis]

In v 4.2 there does not seem to be any way of entering class names when building a custom model

[PetervanLunteren]

If you want to add a new label to the list:

• edit the label
• verify the image
• close annotation window
• reopen annotation window

Now you the label should be added to the classes list. I’ll add these steps it to the documentation.

Feel free to reopen this issue if this doesn't work out for you.