Part list is almost fully invisible when attempting to install a vehicle part

[Ilysen]

Describe the bug

When trying to install a part onto any vehicle tile, the list of part options is completely invisible on most tiles. External tiles are invisible except for a "fridge" part. You can still use the arrow keys and search function to navigate to and select parts, but it has to be done by looking at the info on the sidebar.

Steps To Reproduce

1. Find an existing vehicle, or debug one in.
2. examine the vehicle, try to install a part on any of that vehicle's tiles.
3. See that the part list is completely empty for the interior of vehicles, or only shows the fridge for exterior/empty tiles.

Expected behavior

All possible parts should be visible when attempting to install a vehicle part.

Screenshots

Versions and configuration

Note - I compiled this from source. My diff tree is empty except for a .manifest file, and my branch is otherwise up-to-date with master as of the time of posting. No changes have been made to the C++ code, and the solution was only opened to compile.

• OS: Windows
  • OS Version: 10.0 2009
• Game Version: 0.F-3579-g43f9c3cbd1 [64-bit]
• Graphics Version: Tiles
• Game Language: System language []
• Mods loaded: [
  Dark Days Ahead [dda],
  Blaze Industries [blazeindustries],
  No Rail Stations [No_Rail_Stations],
  Bionic Slots [cbm_slots],
  Disable NPC Needs [no_npc_food],
  No Fungal Growth [no_fungal_growth]
  ]

Additional context

If I had to guess, this is probably related to #51286, but I have no idea.

[dseguin]

Any vehicle part without the "APPLIANCE" flag is skipped when printing (from 9a356d9):

Cataclysm-DDA/src/veh_interact.cpp

Lines 2843 to 2854 in 8bca442

	for( size_t i = page * lines_per_page; i < ( page + 1 ) * lines_per_page && i < list.size(); i++ ) {
	const vpart_info &info = *list[i];
	if( !info.has_flag( VPFLAG_APPLIANCE ) ) {
	continue;
	}
	int y = i - page * lines_per_page + header;
	mvwputch( w_list, point( 1, y ), info.color, special_symbol( info.sym ) );
	nc_color col = can_potentially_install( info ) ? c_white : c_dark_gray;
	trim_and_print( w_list, point( 3, y ), getmaxx( w_list ) - 3, pos == i ? hilite( col ) : col,
	info.name() );
	}