Macro's called from form in Base don't execute in 5.3.6

I am developing in 5.3.5.2 and installed 5.3.6.
My macro’s are not executed any more.
What happened?

Please check if your Macro Security Level is set to "Medium" in the menu "Tools : Options : LibreOffice : Security : Macro Security : Security Level"

It must have been some ghost. It started to work again.