Editing event end date → post event date on topic title not updated (since 3.6.0.beta2 update)

Bug
1

Tested on 3.6.0.beta2, as far as I recall, issue didn’t appear on beta1

Steps:

  1. Create new topic with event start date in the pats and end date in the future (e.g. in 3 hours)
  2. Publish topic, post event date on topic title is displayed correctly
  3. Update event end date to a later or earlier time
  4. Issue occurs: post event date on topic title remains the same

I tried to refresh HTML as well, but issue persists

Edit: I encountered same issue when editing just the event start date, but could not reproduce it yet…