I can confirm that xtables-addons 3.0-0.1ubuntu5 can be built and the modules loaded on Bionic with both generic (4.15.0-134-generic,) and hwe (5.4.0-64-generic) kernels.
I can confirm that xtables-addons 3.0-0.1ubuntu5 can be built and the modules loaded on Bionic with both generic (4.15.0- 134-generic, ) and hwe (5.4.0-64-generic) kernels.