Fog doesn't look right anymore

[slipher]

In 0.51.1, the fog in atcshd looks like this:

In 0.54.0 it looks like this:

[VReaperV]

How do we know it's the later broken and not the former?

[cu-kai]

Here is how it looks in Tremulous. Client is Tremfusion 0.99r3 compiled from git: https://github.com/l-uu/tremfusion

[VReaperV]

That's mostly like the first screenshot, thanks.