Water flowing on north and west edges of dirt

By the screenshot I got (sorry, I am horrible at screenshoting), it is clearly visible that in the north and west submerged edges of dirt there appears an flowing water animation, just like that which appears in glass (the latter one which seems already fixed), but more boring.

What was expected:

The dirt edges show an blueish version of the texture, transluced by the water.

What happened actually:

The northwestern edges shown an flowing water animation, with no trace of the dirt's texture (completely obfuscated by the water's blue).

Note:
Also I did just noted it when I was swimming in the water, going to an (very) thin river's northwestern "shore", which means it might have been passed hidden throughout even the most eye-peeled people.