Cannot select any Shulker object.

[MathTheNight]

What steps will reproduce the problem?

1. Type /aslab wand to get the stick.
2. Rightclick+Shift with the stick.
3. Rightclick the named shulker block.

What were you expecting to happen? What happened instead?

I expected to select the object(shulker), but instead nothing happens.

What version of the plugin are you using? Type /version <Plugin Name>

1.11.0-SNAPSHOT

What Spigot version are you using? Type /version

1.14.4

What plugins are you using? Type /plugins

Plugins: Multiverse-Core, LoginSecurity (aka AuthMe), bStats, AdvancedSlabs, ProtocolLib, Updater, SkinsRestorer, WorldEdit, Essentials, VoxelSniper, PluginMetrics, KPG-clans (custom plugin), EssentialsXMPP, PermissionsEx, EssentialsGeoIP, Vault.

Do you have an error log? Use pastebin.com. If you're not sure, upload your whole server log

https://pastebin.com/qWVvbP3G

Did your client crash? Upload errors in .minecraft/logs/latest.log as well

No, it didn't.

Additional information? (Are you using Bungeecord? Did it work in previous versions? etc.)

As I've downloaded a different WorldEdit, the effect of the Shulkers have changed to a falling block.
But normally, I've tried AdvancedSlabs versions: 1.11.0v, 1.8.2v, 1.9.1v, 1.10.1v, 1.9.0v.
Well, some of the versions, propably lower than 1.9.0 have been not been working after performing the main command "/aslab".

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