With the 'Draw Overlays Beneath NPCs' option enabled in the Better NPC Highlight plugin, NPC death animations are drawing over overlays such as ground markers or items. This causes them to disappear for the duration of the death animations where the overlap.
This only happens if the 'Hide Dead NPCs' option is enabled in the Entity Hider plugin but seems like unintended behaviour since I don't think an NPC death is considered an overlay. It happens for all NPCs regardless if they are being highlighted by the plugin or not.
With the 'Draw Overlays Beneath NPCs' option enabled in the Better NPC Highlight plugin, NPC death animations are drawing over overlays such as ground markers or items. This causes them to disappear for the duration of the death animations where the overlap.
This only happens if the 'Hide Dead NPCs' option is enabled in the Entity Hider plugin but seems like unintended behaviour since I don't think an NPC death is considered an overlay. It happens for all NPCs regardless if they are being highlighted by the plugin or not.