I through a flashbang inside a base and had permanently white screen where I could not see. I had tested previously and it only lasts 3 seconds.
It was only removed by exiting the server and rejoining. Happened to 4 players in the area.
I also found this error in my RCON
(00:08:06) | Failed to run a 1.00 timer in 'Flashbang v1.0.4' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Plugins.Flashbang.UnFlash (BasePlayer player) [0x00012] in <d666e793baa4478da485ec86db8bdf10>:0
at System.Collections.Generic.List`1[T].ForEach (System.Action`1[T] action) [0x00024] in <eae584ce26bc40229c1b1aa476bfa589>:0
at Oxide.Plugins.Flashbang.CheckForExpired () [0x0004f] in <d666e793baa4478da485ec86db8bdf10>:0
at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <0fbce81d88d64454b3e7abb24df7026b>:0"