How to align a single Gutenberg block button in WP 5.5.3?

Question

With some WP update, the single block button suddenly disappeared from Gutenberg blocks. Now, we only have a block 'Buttons' element (don't know why actually. I reckon' that >80 per cent of all uses are single button scenarios...).

So, how can I adjust alignment from within the editor, if I have only a single button? Say, I need to center the button. Can't find any alignment options with the element anymore either, as people suggested here.

Answer 1

1. select the entire 'buttons' block

2. once the entire buttons block is selected,

For future reference, the wordpress.com button article is usually current although it is currently out of date at the moment.