I recalled my Dolphin after an unfruitful round-trip looking for bios on this planet. When I got to it after it had landed, I found it had sunken "waist deep" onto the planet surface!
Luckilly I could dismiss and recall it. It the landed on top of the surface instead of sinking. I did have a few minutes of concern about what I'd have to do if it kept sinking when racalled
I spent an hour dismissing and recalling my ship the other day because it kept doing this. Either sinking in the ground or landing where the entrance was blocked by a boulder. :/