This is a very old bug and has been in Hedgewars for many versions, but I am not sure it was ever reported.
The last time I tested it on 0.9.22.
Just play any theme which does not have flakes, for example, Cheese. And wait for Sudden Death.
Now look at the water. You notice there are some static (non-moving) skulls and bones hanging around there for no reason. It looks strange.
Note the theme.cfg of Cheese does not have a field “flakes” or “sd-flakes”. I haven't cheked other themes.
Hi, I am a Hedgewars developer.