#1
You can no longer use mirror cubes to 'reorientate' hazard stripes
to form a 'guidance arrow'.

Regardless of mode, they seem to be all the same orientation now.

(Computers and modules, work as intended.)

Reproduced in:

• Default texture pack @ 128
• All three planes
• Black/Yellow, Green/White hazard stripes

#2
In advanced build mode it states "orientation na" for the full blocks
they can be rotated manualy in a limited way however to form arrows manualy
but only on the top it seems

and the preview of the block doesnt represent the final placement
(the green/white one will be placed the same as its neigbours)

#3
to reproduce
place hazard blocks
while placing them us the rotate funktion (even though that is N/A)
what how they get placed and how the preview looks