I experienced this on 963R and 858.
For 963R, i waited for 20 mins for this bus, i saw the bus at
the back and there are 3 SBST buses in front. Instead of queueing,
963R (SMB342Z) just went off without stopping. Driven by PRC
driver. This made me pissed off
For 858 same thing, 3 buses in front, 858 didnt queue up,
instead just skip stops and i saw some pax were like puzzled why
858 skipped stop, it caused some great inconvenience