metaMagiK scope doesn't work?

Hi,
I have a small problem.

I created two custom fields and assigned their scope to specific projects(board 1 and 3).
However, when adding tasks to another project(board 5) where none of these fields are assigned, an icon appears showing the number of available metadata(task footer icon).

The task nr 41 comes from board number 5, while the fields are assigned to boards 1 and 3 (see the image below) (metadata_types).

When I add a third custom field, the message about 3 metadata appears when creating a new task in any board.

Where should I look for a solution? Below, I’m providing the configuration and installed plugins.

Plugins:
Auto Subtask Creation 2.1
BigBoard 1.5.1
Calendar 1.5.0
Gantt 1.0.6
Group_assign 1.8.2
metaMagik 1.5.5
PluginManager 4.7
SubtaskDueDate 1.1.3
SubtasksOnBoard 1.0.9
TagManager 1.6.0
ThemeRevision for Kanboard 1.1.12

Sorry for only one picture, but new users can’t add more.
Thank you :slight_smile: