I saw the Commando forum thread and we are aware of the 'reports'.
Unfortunately no one has filed an official report on Mantis yet; which is really the only way to truly get things addressed (and fixed) .
That link you found is a good one btw, so feel free to use it as *evidence*...if you file the Mantis.
p.s. Did you attempt to reproduce the issue on TCNova yet?
p.p.s. I'm sure it relates to this new change from Pub7 patch-notes on page 1 of this very thread...
"Combat:
The damage of dots applied from weapon attacks is now reduced by the target's armor"