On start-up, all PAPI expansions are not loaded (in my case, Vanish and Vault). After reload (triggered by temporary addition to my start-up script), they are all present.
>papi list
[09:05:18 INFO]: 17 Placeholder hooks registered:
[09:05:18 INFO]: bentobox, combatlogx, coordinatetool, denizen, disease, essentials, level, luckperms, mobhunting, multiverse, parkour, player, residence, skript, thirst, viaversion, worldguard
>papi reload
[09:05:23 INFO]: PlaceholderAPI configuration reloaded!
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: vanish
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: multiverse
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: thirst
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: luckperms
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: skript
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: vault
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: disease
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: worldguard
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: essentials
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: coordinatetool
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: viaversion
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: player
[09:05:23 INFO]: [PlaceholderAPI] Successfully registered expansion: parkour
[09:05:23 INFO]: 17 placeholder hooks successfully registered!
>papi list
[09:05:29 INFO]: 17 Placeholder hooks registered:
[09:05:29 INFO]: combatlogx, coordinatetool, denizen, disease, essentials, luckperms, mobhunting, multiverse, parkour, player, residence, skript, thirst, vanish, vault, viaversion, worldguard
Spigot 1.14 (2225) and Spigot 1.13.2 final
PlaceholderAPI 2.9.2-61
On start-up, all PAPI expansions are not loaded (in my case, Vanish and Vault). After reload (triggered by temporary addition to my start-up script), they are all present.
Note addition of vanish and vault after reload.
The disappearance of BentoBox and Level is a separate issue at their end.