Deconstructing gravel leaves "nothing" terrain

[CSHague]

Describe the bug

Deconstructing Gravel leaves a sharp stone and 20-50 pebbles that float in a void of nothing.

Steps To Reproduce

Construct gravel or move down to the subway level. Then deconstruct gravel present. It will leave a space of nothingness

Expected behavior

Should leave a terrain tile of a type appropriate to the z-level.

Versions and configuration

• OS: Windows
  • OS Version: 10.0 1903
• Game Version: 0.D-9922-g0d3a6af [64-bit]
• Graphics Version: Tiles
• Mods loaded: [
  Dark Days Ahead [dda],
  Magiclysm [magiclysm],
  Aftershock [aftershock],
  Bens GF recipes [Tolerate_This],
  Garden Pots [growable-pots],
  Medieval and Historic Classes and Shields [Medieval_Stuff],
  More Survival Tools [More_Survival_Tools],
  Makeshift Items Mod [makeshift],
  Modular Turrets [modular_turrets],
  Salvaged Robots [Salvaged_Robots],
  Hydroponics [hydroponics],
  Mutant NPCs [mutant_npcs],
  Beta National Guard Camp [national_guard_camp],
  More Locations [more_locations],
  Fuji's More Buildings [FujiStruct],
  Folding Parts pack [deoxymod],
  Vehicle Additions Pack [blazemod],
  Roadheader and other mining vehicles [Heavy miners],
  Tanks and Other Vehicles [Tanks]
  ]

Additional context

Looking at older issues re: gravel, it seems that t_null does work with bashing terrain but it does not apply properly (in this instance anyway) to the deconstruct action.
#35567