It's possible to break trigger wizard form by following these steps:
- Type in an expression and click "And" or "Or" so that it is added in the keyword table.
- Try to save form and get a natural error. So far so good.
- Press "Add" so that the keyword is added to the expression table below.
- Type in another expression and press "And" or "Or".
- Press "Add" again to add it to the expression table.
- Experience the JS error:
TypeError: key_tr is null
Bug was introduced in 2.4