While doing some work with DS 3.1 I see strange things happening (I observed this long time ago since DS 2.5 but)
Here is picture:
There you can see hydrogen bond between water and HCl, which I think is not possible, or?
And hyrogen bond between water and HF, but between two species of HF there is none forming (as long as I know this is one of the strongest hydrogen bonds in chemistry?)
I can provide .dsv file if needed.