Horizontal layout midle alignment does not work in awesome 4 (but used to work in 3.5)

[ThePinkPanther]

Output of awesome --version:

awesome v4.0 (Harder, Better, Faster, Stronger) • Compiled against Lua 5.1.5 (running with Lua 5.1) • D-Bus support: ✔ • execinfo support: ✔ • RandR 1.5 support: ✘ • LGI version: 0.9.1

How to reproduce the issue:

Checkout my awesome configuration from here: https://github.com/ThePinkPanther/MinimalAwesome

Actual result:

set_middle aligns on the left instead of center in horizontal layout, but the same configuration used to work in Awesome 3.5

I described in this SO question: https://stackoverflow.com/questions/44349147/awesome-wm-4-middle-align-does-not-work-in-horizontal-layout

Expected result:

set_middle should align component in the middle of it's layout

[psychon]

Set expand to outside for your align layout: https://awesomewm.org/doc/api/classes/wibox.layout.align.html#wibox.layout.align.expand

[ThePinkPanther]

Thanks a lot