How is that setting a breakpoint in my code allows the following code to complete which would fail otherwise.

Here is the problem.

I'm writing an add-on for SAP B1 and encountered following problem.

When I load a form I would like to enter some values into the form' matrix.

But without a breakpoint (set on a method in which loading a form takes place) the part of code that is executed afterward will fail. That part of code is referencing a matrix that is not yet displayed which results in an exception. This is all clear. But why setting a breakpoint "solves" the problem.

What is going on?

I suspect that my breakpoint introduces some delay between loading and displaying my form and part of code that references element of that form but I could be wrong.