Like is said in the description of that ability , is not a probability at 100% chance , happen just sometime , max 30%

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And for the 5xless units ... the 2 attacks are too long one from the other 14.10 and 14.21  for sure he moved units in that time ....

Your arguments are not valid.

I am well aware of the activation chance.  But if you look at the screenshots, on the one attack it indicated the def reduction actually was activated.

Secondly, that castle was never reinforced between attacks.  I know this for a fact. Also it is very obvious the troop count and make up did not change based on what was killed.

But fine.  It will be very simple for me to recreate the scenario using a friends castle under very controlled conditions.  And I will simply repost.

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If the above Icon appears, castle def reduction should have been activated.

As i said the chance for decrease doesn't happen on all  the attacks you launch, the probability is 30 % at max

I just tested it attacking an alt to ensure no changes, can confirm the defense bonus reduction is working properly.  Castle defense bonus was 10k.  

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Yeap, thanks for this pictures :)