Sometimes 500, but I tried 270 height
I downgrade the server so many time to find where did the first time this issue comes, and the answer is a very old snapshot 18w48a. If I start a server 18w48a or greater I got this issue, but 18w47b or lower is working fine.
Yes, both minecraft.net and launcher server download button
Yes, I tired in my laptop, desktop pc and I asked my friend to try it and he has the same issue like me. (always with a new empty server)
When I change the value of those options nothing happen, In that picture me and my friend are in the same team, but seeFriendlyInvisibles doesn't work and the same happens in the other cases, as if not counting the value.
Use buttom 2
Ok, I tried it, and it's working fine in the newest pre-release, but I don't understand why can't I set a greater number than 256 (like 512 is also multiple of 8), but if the height is 248, also restore to the default 256, so this is not consistent.