Bug? B4A V7.30 can't any longer compile (without signing)

This feature in e.g. V3.82 was useful to sign a package with a sign key that wasn't created with B4A. There are some threads and how-to's available in the forum.

After updating B4A to V7.30, I can't compile without signing to use JDK signing algorithms afterwards.

This is not a bug. This feature is available in the command line compiler.

To compile without signing you can use the command line tool "B4ABuilder.exe" founding in your B4A program directory.
I use this parameters:
B4ABuilder.exe -Task=Build -NoSign=True -Obfuscate=True -ShowWarnings=True -Optimize=True

edit: Erel was faster (as always).