Unable to load inventory nodes due to vault parsing error

[diginote]

Since the update from Rundeck v5.2.0 to v5.5.0, nodes cannot be loaded because reading vault files fails:

...
rundeck-app    | [2024-08-15T13:40:11,128] ERROR resources.ExceptionCatchingResourceModelSource - [ResourceModelSource: 1.source (com.batix.rundeck.plugins.AnsibleResourceModelSourceFactory), project: App-Test]
rundeck-app    | com.dtolabs.rundeck.core.resources.ResourceModelSourceException: Cannot load yaml data coming from Ansible: could not determine a constructor for the tag !vault
rundeck-app    |  in 'string', line 33, column 37:
rundeck-app    |               vault_app_admin_pw: !vault |
rundeck-app    |                                         ^
rundeck-app    |
...
rundeck-app    |        at java.lang.Thread.run(Thread.java:829) [?:?]
rundeck-app    | Caused by: org.yaml.snakeyaml.constructor.ConstructorException: could not determine a constructor for the tag !vault
rundeck-app    |  in 'string', line 33, column 37:
rundeck-app    |               vault_app_admin_pw: !vault |
rundeck-app    |                                         ^
...

Running the playbook without rundeck works as expected (same host as rundeck).

[diginote]

addition infromation:

this is the screenshot in rundeck, when inventory is loaded:

When downgrading to rundeck v5.2.0 everything works as expected.

[psykotox]

Same problem here 😬

[diginote]

no change with the current Rundeck version v5.6.0 :(

[diginote]

Unfortunately, the problem still exists with the current plugin version v4.0.6.

[PianaJava]

So,

Is there any workaround for this?
Any solution in plan or shall I just roll back to a previous version?