Two weeks ago, when you edited a new post, this was the tab order:
1- press "Edit" next to "publish immediately"
2- Press Tab (now you were on the next field: "month")
Currently, at step 2 you are now at the top-left corner of your screen in a suddenly appearing link called "Skip to main content".
Now you need to hit the tab key about 30 times to get to the "month" field.
This is most likely caused by the removal of the synchronization of keyboard focus and mouse focus somewhere in the WordPress code.
Please restore the previous behaviour.
The blog I need help with is wiert.me.