Unable to remove a player with "add" status from a plot

Server Implementation

Paper

Server Version

1.21.3

Describe the bug

When attempting to remove a player who previously had the add permission on a plot, the removal fails.
Even though the player is shown as being added, PlotSquared returns the error:

<player> is neither added, trusted or denied on the plot, thus doesn't need to be removed.

To Reproduce

1. Add a player to a plot using /plot add <player>.
2. Try to remove the same player using /plot remove <player> or /plot delete <player>.
3. PlotSquared returns an error that the player is not added, even though they are added.
4. The player remains unable to be removed from the plot.

Expected behaviour

Self-explanatory

Screenshots / Videos

https://github.com/user-attachments/assets/0b606cae-78ee-4fc8-9fa8-9e35f956dbdc

Error log (if applicable)

No response

Plot Debugpaste

https://athion.net/ISPaster/paste/view/04b06c6d51d3420bab74485da6499af0

PlotSquared Version

PlotSquared version 7.5.10-SNAPSHOT

Checklist

• I have included a Plot debugpaste.
• I am using the newest build from https://www.spigotmc.org/resources/77506/ and the issue still persists.

Anything else?

No response

Start by reproducing the /plot add <player> and /plot remove <player> flow on Paper 1.21.3, using the linked debugpaste for context. Trace the permission state used by removal and deletion, then verify that a player with add status can be removed without the incorrect error.