Bentobox: Spawn point disappears after server restart

[HuJunwei23333]

Description
Spawn point disappears after server restart

Steps to reproduce the behavior:

1. /bsbadmin setspawn
2. restart
3. Spawn point disappears.Type the command: /is spawn is invalid
4. no error

Expected behavior
Ability to save Spawn point

Screenshots
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Server Information:

[Please complete the following information:]

• Database being used (Flat file, MySQL, Mongo): [Flat file]
• OS: [Windows7?]
• Java Version: [Java 8]
• BentoBox version: [Latest version v1.3.0-SNAPSHOT]
• Addons installed? [[13:59:25 INFO]: Bentobox 版本：1.3.0-SNAPSHOT
• Other plugins? [[14:00:07 INFO]: Plugins (15): WorldEdit, VoidGenerator, PlaceholderAPI, SQLibra
  ry, Vault, WorldGuard, Citizens, BentoBox, Essentials, EssentialsProtect, Essent
  ialsChat, EssentialsAntiBuild, EssentialsSpawn, Multiverse-Core, Residence]

Additional context
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[Poslovitch]

Related to BentoBox, moving.

[wellnesscookie]

We have the same problem.

• Island is still being seen as spawn one: http://prntscr.com/mhgcx1
• /island spawn output: http://prntscr.com/mhgeb1 (We will update our locales, np)
• /bskyblock setspawn if we try to set it again: http://prntscr.com/mhgssx (Already set ^)

[Poslovitch]

Another occurence of the bug has been sent on the Discord server. I'll investigate this bug and try to fix it for 1.3.0. I'll also try to work on unit tests to ensure everything will keep working.

[krustymk]

In reference to Poslovitch and discord

I deleted both islands, then used the 'schem' to bring them back (saved/loaded) which removed the 'spawn island' flag in the info. how ever setting one as a spawn island again and using the /island spawn command now throws an error in the consol https://pastebin.com/94nHMHW8.

[wellnesscookie]

We have tested with the build 824.

• We /bsbadmin setspawn to a random one so we remove the previous
• We /bsbadmin setspawn back to the one intended to be & we restart the server
• It became unregistered, but still recognised as spawn one.
• /island spawn gives 2 messages. Teleportation message (Green) & the red one.
  See: http://prntscr.com/mmgbjd
• Console gives: https://pastebin.com/s7vPdRcu

Say if I need to create a new issue. Not sure how do I reopen this.

[tastybento]

Should be fixed now.

There were a few other things that were not working that now do - for example, you can run setspawn on the spawn island any time to reposition the spawn point.