If I go into "Edit Appearance" then afterwards I can no longer see water in the region I was in when I first edited my appearance. Water renders in other regions, and the void water renders fine. I've tried toggling the various shaders on and off in Preferences - Graphics incase that might reset the missing water but it doesn't help.
It's actually more than the water disappearing, a lot of things under the water vanish too, including the land. As if the water was turned into a giant invisi-prim. But if you physically go underwater, then you can see things that are down there, and you get the dark bluish cast like normal when under water.
Leaving the region and returning does not help, either by crossing to an adjacent region or by teleporting away. The only thing that fixes it is a relog.
About info:
I first noticed this a couple weeks ago, with version 1.26.4.56 but at the time I thought it was an isolated glitch.
Log file and screenshot attached.
Cheers!