Steps to reproduce:
Create a credit memo and add an adjustment refund / fee
Expected result:
Tax is recalculated
Actual result:
No difference in tax
Obviously this is wrong from an accountants perspective in many countries (at least in Germany). I am not an accountant so I can't tell but have been told so by our tax advisor.
Actually there's an open bug report on this for Magento2:
here: https://github.com/magento/magento2/issues/12494
and maybe this one too: https://github.com/magento/magento2/issues/3284
But unfortunately I wasn't able to find anything about Magento 1.9.3 which is what we are using. And even if there was anything open, we'd still need a workaround on that.
Unfortunately I have no idea on how to fix this. Does anyone have an idea? Are there any workarounds,extensions or anything because I guess we can't be the only ones with this problem.