The skin on your arms to be more precise.

It seems like the environment gets out of sync between the client and the server.

This glitch has happened multiple times to me in versions 0.28, .29 and .30. Server latency might have a part in it but cant confirm this.

This indeed is not a bug but bringing these sliders from the mod onto the SA is game breaking and should be looked into.

As long as the player is able to cheese their gamma and brightness for a free night vision the game is broken and unbalanced. The author of this issue has given good arguments and viable suggestions to fix the matter and there is absolutely no reason not to act accordingly.

I can confirm this unless there's some voodoo way to do it. I tried the add the flashlight to the M4 and FNX45.

I fiddled with the filter settings and after that no servers showed up in the list anymore. It didnt matter if I reverted them to the default settings. I tried verifying the cache and that seemed to do the trick but the next time it didnt work anymore. After a few DayZ restarts it gives me the servers once again. I dont know if its random or if it'll work after an undefined span of time.