If you pause the second video at 2:49, you can see a sign that disappears again at 2:50.


The first video's sign exists for 25 frames.

So apparently the repeater is indeed replaced with a sign (apparently due to an anti-clock-mechanism?), but the sign doesn't persist.


Also, out of curiosity:
Since when do repeaters get replaced with signs? According to your "Expected Result" answer above, this appears to be known behavior. All of my previous tests since the clock prevention mechanism's introduction simply removed the repeater without placing any kind of sign.

 

I have got some comparator/repeater clocks to work albeit with different results.. what I have found is that anything around a tick/sec sometimes even slower can cause the anti clock message..

It does break both repeaters and red stone.. right now the best result I have found it using a comparator with 4 repeaters set on 3 ticks..

It’s about a tick/sec and has not triggered the break..

 

I can help if needed.. I believe I have the timing down..

If you are having trouble with your clocks feel free to pm me.

Basically your out put cannot be more then 1 pulse per sec roughly. There are a few clocks I can show you to obtain this.. if you have multiple outputs it can effect your input as well. Basic repeater with comparator clocks appear to work the best.

 

@andrewkm
Follow-up on those Redstone limits:
https://www.ecocitycraft.com/forum/wiki/skyblock-anti-lag-measures/