Sorry, I dont have footage… But his has happened now on Multiple worlds I have created - Easiest way to replicate is using the following Seed… I was messing about and trying New Seeds by using less numbers!!! And 2412 gave me a great result!
Mainly as a Woodland Mansion is not far from Spawn…
But again, Multiple worlds… Including where they are teh usual around 15,000 blocks away at least…
Discovering a Woodland Mansion, We have entered and fought - And raided… But They are WAY TOO EASY! As there does not seem to be any Illigers Spawning!
Again, This is happening on EVERY SINGLE WORLD! No Illigers in the Woodland Mansions! Which, in one respect, Is cool… But we miss the challenge!
This seems more like an opinion or suggestion than a bug report.
If you believe there is an actual bug, please focus on providing steps to reproduce along with both "observed" and "expected" results.
Note that the difficulty in clearing a woodland mansion is likely related to player skill and game setting.