What you are seeing on this screenshot are a couple announcements made yesterday by cubecraft devs on discord that claim several bugs have been fixed.
The important ones here are invisible players and the potion effects one because here is a clip showing those two bugs very much not being fixed:
What you are looking for in that clips is:
1. effects not applied correctly/not visible, which can be seen several times as the chat claims teammates pick up effects like slow falling or strength, yet all I have is speed.
2. Invisible players, at the start of the clip I receive 3 hits with no source. No arrows visible, no players hitting me visible, just me being punched by literal air as far as I am concerned.
Look, I get that sometimes even "simple" can take a long time to fix, as a programmer, computer science student and a hobby game developer I understand that better than most players on here probably ever will, but if you are going to say you have fixed them then how about NOT LYING ABOUT IT?
Its one thing to take ages to fix "simple" bugs that have been plaguing a game for ages. Its another to lie about having fixed them.
Also: "potion effects not being visible" is actually an incorrect description of the bug, because the actual bug is the effects NOT BEING APPLIED IN THE FIRST PLACE.
"effects not being visible" would mean I'd have jump boost, slow falling, strength, or whatever me or my teammates pick up, just with the icon not being visible.
What happens here is that, with the exception of speed, I receive absolutely zero effects at all.
So congrats, on top of lying about bug fixes you don't seem to know what actually is the problem that needs to be fixed.
And btw, I am fully aware that sometimes bug fixes take time to roll out on the entire network, as in: roll out on all lobbies, in all regions, etc.
However the clip I recorded is from giga blockwars. A gamemode which has very massive lobbies, with a maximum of up to a 100 players. This also means there are only very few lobbies in it, since with a total of only 150-300 players online at the same time you only need a few lobbies for them to be able to play.
Yet, despite 15 hours passing between the announcement of the bugs being "fixed" and me recording that clip (it was recorded today around 9, the announcement was made yesterday at 17:51) it seems that the bug fixes still aren't there.
And before anyone says that it may have changed since that recording was made: it surely did not at the time I am writing this as I went into the game just to check again, and at the time I am writing this those bugs are very much still not fixed.
The only one of the bugs regarding blockwars that actually was fixed was the inventory loadout one, and even that's only partially true, the game just remembers the position of your tools, sword, task-thingy and bow and it completely ignores where I prefer my blocks being placed, and yes I notice that because I don't want to have my wood planks in the slot in which they keep spawning in, its very important they are not placed in that specific slot because I usually use my wood for crafting sticks and because you don't get more wood unless you either die or take the pit in bridges, you can not get more through kills like you can with teracotta and arrows.
So, in conlusion, out of the three bug fixed mentioned in this post, since the announcement of them being fixed only one of them has (partially) been fixed.
Edit: I just went into the game again and found out the game randomly erased my inventory loadout, meaning that the bug isn't even partially fixed. Its not fixed at all, reducing the amount of fixed bugs from 0.5/3 to 0/3.