Strict type exception from Timeline occurs when using a Schedule block and Publish later combination.
- Create new Landing Page.
- Add Content Scheduler block.
- Add one item with airtime now.
- Add second item with airtime in a week.
- Publish LP.
- Edit LP.
- Publish later in a week (same day as in step 4).
- Open Timeline.
- Switch to date from steps 4 & 7.
Actual result: Exception occurs
Remarks: Could not reproduce on 2.5.10.