It's as the title says. In the current game version (playing Legion Remix in the screenshot, but the same thing happened to certain Brewfest interactables in the normal game world), interactable objects such as mailboxes, herbs, mining nodes, etc., that normally have no nameplates are being given a nameplate by this addon, and seem to be displaying the nameplate of a random nearby unit. Which nameplate they get changes every time I look away and back toward it again (causing it to lose Action Targeting focus and then regain it).

Oh right, I should probably have posted the /knp dump:

2.29.20-3-ga9248da 2.5
enUS ROGUE
{profile=default}
{auras_hide_all_other=true,auras_show_all_self=true,bossmod_control_visibility=false,bossmod_enable=false,class_colour_enemy_names=true,classpowers_enable=false,classpowers_on_enemies=false,classpowers_on_friends=false,classpowers_on_target=false,colour_enemy_class=false,cvar_enable=true,cvar_personal_show_combat=false,cvar_show_friendly_npcs=true,font_face=Friz Quadrata TT,font_size_normal=14,hide_names=false,ignore_uiscale=true,level_nameonly=true,level_text=true,mouseover_glow=true,nameonly_target=false,tank_mode=false}
HealthBar, NameText, LevelText, CombatUpdate, [ClassPowers], RaidIcon, PowerBar, Highlight, AbsorbBar, CastBar, Classification, Auras, Threat, Execute, PlayerAnchor, GuildText, Fading, [CombatToggle], ArenaID, BarAnimation, [BossMods], [TankMode], Quest, Target, TotalRP3