https://hastebin.com/afatufasif.rb
What have I done wrong now?

Bungeecord build 1236
LuckPerms-Bungee 3.2.7

I suspect I may need to pull my bungeecord back to 1232

Uhh, I highly doubt it's a BungeeCord bug.

Can you pastebin your config file?

I was just comparing the config on bungee with the config on sponge. It appears some quotation marks and brackets "disappeared" ...

Bungee server: bungee
sponge server="play"

And the default-assignemets
bungee default-assignments (no closing bracket either
sponge default-assignments { (with a closing bracket)

I have a feeling this is what I get for trying to edit configs in Notepad++

Edit:
Deleted the bungee configs and restarted. The above is actually default...

Yes. Different formats.

When you restarted, were there any errors?

I am 95% positive it's because I copied parts of the config file from the sponge config.
There were no errors after the restart. I reset the database info (without the quotation marks...) and it's all good now.

Another case of to many derp sprinkles on my eedjit ice cream.

Alright, cool.

Remember to close the issue you opened on the Bungee repo too ;)