Smart groups not being evaluated for trigger "Event Participant is changed"

Software in use

• Drupal version: 7.67
• CiviCRM version: 5.17.0
• CiviRules version: 2.9

Setup

Two webforms used for registering contacts for an event. If both are submitted, participant's status should change.

• <Smart Group 1>
  • based on presence of relationship with <custom field 1>
• <Smart Group 2>
  • based on presence of relationship with <custom field 2>
• CiviCRM Webform 1
  • adds <custom field 1> for relationship (-> contact in <Smart Group 1>)
  • sets Participant Status to <Status 1>
• CiviCRM Webform 2
  • adds <custom field 2> for relationship (-> contact in <Smart Group 2>)
  • sets Participant Status to <Status 1>
• CiviRule
  • Trigger: Event Participant is changed
  • Conditions:
    • Participant Status is one of: <Status 1>
    • AND Contact in all selected groups (<Smart Group 1>, <Smart Group 2>)
  • Action: Update Participant Status: <Status 2>

Actual Result

Participant's status stays <Status 1>

Expected Result

Participant's status changed to <Status 2>

Additional information

Using "normal" groups works, however.

I can't provide logs from the Civirules logger, as for some unknown reason it doesn't log anything :/