Issues with cast sequence macro since pre patch

Guides UI and Macro
1
I have used the below macro for quite some time without issues (give or take a few different spells in there)

#showtooltip
/castsequence reset=30 Unholy Frenzy, Apocalypse, Army of the Dead
/use Blood Fury

At the moment what it will do is the following:

First click - uses bloody fury and pops unholy frenzy
Second click - the tool tip shows apocalypse but doesn't activate the move

It has been problematic since the release of 8.01 but if i just deleted and re-created the macro it would work for the remainder of my logged in session then stop again if i log out. Now it just flat out doesn't work in a cast sequence

/cast apocalypse works fine but /castsequence apocalypse doesn't

Tried the new spell id in /cast and /castsequence which doesn't work
2
Same here, just tried making the following macro:

#showtooltip
/castsequence reset=60 Wraith Walk, Death's Advance

All it does is cast Wraith Walk, and only shows wraith walks cd. I guess they removed the option for castsequences, pity.
3
Similar problems in Legion with some lock spells would simply break the castsequence macro. This was never fixed so far as i know.
4
/cast apocalypse works fine but /castsequence apocalypse doesn't

same problem here in 2018! :(
5
Same here, /castsequence macro's suddenly stopped working again.

Wondering if Blizzard reverted this intentionaly or its just a bugg at play.
6
its some specific spells to break a castsequence. generally speaking they still work.